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  • i
    i
    the imaginary number .
  • I
    I
    noun
    the ninth letter of the English alphabet, a vowel.
  • i-
    i-
    variant of y-.
  • i.
    i.
    abbreviation
    imperator.
  • -i-
    -i-
    the typical ending of the first element of compounds of Latin words, as -o- is of Greek words, but often used in English with a first element of any origin, if the second element is of Latin origin.
  • I.
    I.
    abbreviation
    Independent.
  • -i
    -i
    suffix
    of or relating to a region or people, esp of the Middle East
Synonyms

i

1 American  
Mathematics.
  1. Also called imaginary unit.  the imaginary number .

  2. a unit vector on the x -axis of a coordinate system.


I 2 American  
[ahy] / aɪ /
Or i

noun

  • I's,
    plural
  • Is,
    plural
  • i's,
    plural
  • is
    plural
  1. the ninth letter of the English alphabet, a vowel.

  2. any spoken sound represented by the letter I or i, as in big, nice, or ski.

  3. something having the shape of an I.

  4. a written or printed representation of the letter I or i.

  5. a device, as a printer's type, for reproducing the letter I or i.


I 3 American  
[ahy] / aɪ /

pronoun

  • we,
    plural nominative
  • me,
    objective
  • us,
    objective
  • my,
    possessive
  • mine,
    possessive
  • our,
    possessive
  • ours
    possessive
  1. the nominative singular pronoun, used in referring to oneself, the person speaking, writing, or otherwise communicating.


noun

  • I's
    plural
  1. (used to denote the narrator of a literary work written in the first person singular.)

  2. Metaphysics. the ego.

I 4 American  

abbreviation

  1. interstate (used with a number to designate an interstate highway).

    I-95.


I 5 American  
Symbol.
  1. the ninth in order or in a series.

  2. (sometimes lowercase) the Roman numeral for 1.

  3. Chemistry. iodine.

  4. Biochemistry. isoleucine.

  5. Electricity. current.

  6. Logic. particular affirmative.

  7. (italics) isotopic spin.


i- 6 American  
  1. variant of y-.


i. 7 American  

abbreviation

  1. imperator.

  2. incisor.

  3. interest.

  4. intransitive.

  5. island.

  6. isle; isles.


-i- 8 American  
  1. the typical ending of the first element of compounds of Latin words, as -o- is of Greek words, but often used in English with a first element of any origin, if the second element is of Latin origin.

    cuneiform; Frenchify.


I. 9 American  

abbreviation

  1. Independent.

  2. Island; Islands.

  3. Isle; Isles.


I 1 British  

symbol

  1. chem iodine

  2. physics current

  3. physics isospin

  4. logic a particular affirmative categorial statement, such as some men are married, often symbolized as SiP Compare A E O 1

  5. one See Roman numerals

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

abbreviation

  1. Italy (international car registration)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
-i 2 British  

suffix

  1. of or relating to a region or people, esp of the Middle East

    Iraqi

    Bangladeshi

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

-i- 3 British  
  1. used between elements in a compound word Compare -o-

    cuneiform

    coniferous

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

i 4 British  
/ aɪ /

noun

  1. the ninth letter and third vowel of the modern English alphabet

  2. any of several speech sounds represented by this letter, in English as in bite or hit

    1. something shaped like an I

    2. ( in combination )

      an I-beam

  3. to pay meticulous attention to detail

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

I. 5 British  

abbreviation

  1. International

  2. Island or Isle

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

I 6 British  
/ aɪ /

pronoun

  1. (subjective) refers to the speaker or writer

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

i 7 British  

symbol

  1. Also called: j.  the imaginary number √–1

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

i Scientific  
/ ī /
  1. The number whose square is equal to −1. Numbers expressed in terms of i are called imaginary or complex numbers.


i Idioms  

Grammar

See me.

Other Word Forms

Noun Inflected Forms

Etymology

Origin of I

First recorded before 900; Middle English ik, ich, i, Old English ic, ih; cognate with Gothic ik, German ich, Old Norse ek, Latin ego, Greek egṓ, Old Church Slavonic azŭ, Lithuanian aš, Sanskrit ahám

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The deal, if successful, would be the largest-ever acquisition for the owner of Circle K, which abandoned a $47 billion takeover attempt of Seven & i, the Japanese owner of 7-Eleven, last July.

From The Wall Street Journal Jul. 31, 2026

The move comes less than a week after Seven & i decided against proceeding with a potential investment in ⁠Zabka.

From The Wall Street Journal Jul. 31, 2026

The i Paper says the new Chancellor John Healey has given a commitment that pensioners whose only earnings are the state pension will not pay income tax.

From BBC Jul. 23, 2026

"Burnham era begins with radical pledge to transform UK" says the i Paper, in reference to the former mayor of Greater Manchester's inaugural speech on the steps of No 10.

From BBC Jul. 21, 2026

“Multiplying by i turns the vector ninety degrees to the left and does not change the length,” Jake said.

From "The Smartest Kid in the Universe" by Chris Grabenstein

“Solidarity is one of the most important ways to tell someone: I am here. That’s why we invite you to help, together.”

From Los Angeles Times Aug. 11, 2026

"I would say it does not happen often," former Secret Service agent Paul Eckloff told the BBC World Service's Newshour programme of the aircraft switch.

From BBC Aug. 11, 2026

"She was all I had, and she's gone. Now I'm all alone," he adds, tears in his eyes.

From Barron's Aug. 11, 2026

In 2020, I calculated that repealing the firewall would lead to $2.2 trillion in higher subsidy spending over a decade for the estimated 24 million people who would switch from employer coverage to the exchanges.

From The Wall Street Journal Aug. 11, 2026

“Most people think I have died because I have tried very hard to efface the past,” she writes.

From "At Last She Stood" by Erin Entrada Kelly

Yet that doesn't make its turnaround solely the work of one heavily stubbled mastermind, who saved a company through his singular vision, taste and liberal use of the i- prefix.

From The Guardian Jan. 25, 2011

But it wasn't until Cipla came out with the i- pill in 2007, marketing it to modern young women through television and magazine advertising, that women took to it.

From Time May 26, 2010

Intelligence however had no-175--vol i- sooner reached the court of the reception afforded to the princess at Ricot, than directions arrived for her immediate removal to Woodstock.

From Memoirs of the Court of Queen Elizabeth by Lucy Aikin

I was appointed to succeed him in his office; and the work which he had so happily begun, without my assistance indeed, but not without some counsels of-94--vol i- mine, I diligently labored to complete.

From Memoirs of the Court of Queen Elizabeth by Lucy Aikin

Yea a ruffian will have more in his ruff and his hose than he should-283--vol i- spend in a year.

From Memoirs of the Court of Queen Elizabeth by Lucy Aikin

And a lot of people, not just the Gilbreths, were very worried that the “best women” i. e. highly educated women were not reproducing.

From Scientific American Sep. 21, 2023

For each of the following functions, determine the i. domain and ii. range.

From Textbooks Mar. 30, 2016

Properties i. and ii. say that line integrals are linear, which is true of single-variable integrals as well.

From Textbooks Mar. 30, 2016

Within minutes, I got my answer: “@sethporges yes. my girlfriend cathy and i. and i used to do puppet shows.”

From Forbes Jun. 26, 2012

Sismondi, Hist. de la Chute de l'Empire romain, tome i. p. 230.316.Eunapius.

From History of European Morals From Augustus to Charlemagne (Vol. 2 of 2) by William Edward Hartpole Lecky

The concord of the 4th prefix, Mi-, is gi-, -i-, -ji-, and sometimes -mi-.

From Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" by Various

It may be a connecting sound, like the -i- in nacht-i-gale.

From A Handbook of the English Language by R. G. (Robert Gordon) Latham

Even a retreat that flops can draw employees closer while they commiserate over its lameness, adds Michael I. Norton, a Harvard Business School professor who has studied group rituals.

From The Wall Street Journal Jul. 23, 2026

Also in 2025, she was a finalist for the Alfred I. duPont-Columbia University Awards for her reporting and hosting of an audio investigation into a deadly U.S. refinery explosion.

From The Wall Street Journal May 29, 2026

Born in Oregon to Taiwanese immigrants, Wang is herself a beneficiary of the doctrine she defended during the historic oral argument—as am I. Following the argument, interest in her background exploded.

From Slate May 26, 2026

But for the 11 months we were married, I experienced the glory of being a we instead of an I. Suddenly I was part of a giant club, the Partnered People.

From Los Angeles Times May 22, 2026

The experience was not lost on the painters, and doubtless some of the sketches of the “Prelude to the Great Storm” will grace the R. A. and R. I. walls in May next.

From "Dracula" by Bram Stoker

Then, when you get to the step where you’re actually running the check-backup command, add -i ~/Downloads/pegasus.stix2 into the option section.

From The Verge Jul. 21, 2021

Singular masculine words end in -us, plurals end in -i.

From The Guardian Jun. 11, 2010

Every Esperanto verb has three Moods—the Conditional, the Imperative, and the Infinitive, which are formed respectively by means of the endings -us, -u, and -i.

From Esperanto Self-Taught with Phonetic Pronunciation by William W. Mann

Pg 62 Sometimes it is not. toumba, to fall. toumbarèu, -ello, likely to fall. canta, to sing. cantarèu, -ello, songful. crese, to believe. creserèu, -ello, inclined to belief. -i.

From Frédéric Mistral Poet and Leader in Provence by Charles Alfred Downer

I, except that some of them have imperatives in -i: vaki, þęfi; uni. lifa, sęgja have imper. lif, sęg.

From Icelandic Primer with Grammar, Notes and Glossary by Henry Sweet

The company taking the top spot on Gauntlet I’s leaderboard External link was Skycutter, a British startup that partnered with Ukrainian drone company SkyFall.

From Barron's Apr. 28, 2026

They include everything from sketches of Apple logos to the bench and desk of the Apple I’s presentation at the Homebrew Computer Club a half-century ago.

From The Wall Street Journal Apr. 3, 2026

In a statement read to the public inquiry examining how Letby was able to attack babies, Child I's mother said: "I believe the doctors and nursing staff should have acted earlier."

From BBC Sep. 19, 2024

Queen Elizabeth I’s elaborate mask-like daily makeup ritual not only hid her smallpox scars but was also meant to project a preternatural agelessness.

From Los Angeles Times Mar. 24, 2024

She laughed and said, “That’s good. I’s kind of surprised your folks let you go to that meeting in the first place.”

From "Elijah of Buxton" by Christopher Paul Curtis

That also raises an even bigger question: Is paying off this $1,000 actually an emergency?

From MarketWatch Aug. 11, 2026

"Is he simply going to ramp up the name of Liverpool in order to make as much money as possible?"

From BBC Aug. 11, 2026

The company will launch a $1 billion “Future Is For Everyone Fund” to directly support communities around the facilities—giving itself a new talking point to deploy against the rising tide of anti-data-center activism.

From The Wall Street Journal Aug. 10, 2026

Is there any character you see rising to the task?

From Los Angeles Times Aug. 10, 2026

Getting up from the bed, Papa looked at his watch and said, “Your mother and I are going to the store today. Is there anything you want me to tell your grandpa?”

From "Summer of the Monkeys" by Wilson Rawls

“No matter what the federal government was doing, they knew that if they weren’t dotting their i’s and crossing their t’s, they were going to get called to account,” Hilton said.

From Salon Jul. 15, 2026

"I had really dotted all the i's and crossed all the t's of the experiment," he said.

From Science Daily May 18, 2026

I care that you dot your i’s, you cross your t’s, that if you say you’re going to do something, you do it.

From The Wall Street Journal Mar. 12, 2026

"Your proposal does not adequately acknowledge the multiple and significant challenges such a transaction would face from US competition law enforcement agencies," Seven & i's letter added.

From BBC Sep. 5, 2024

I’ve won the writing prize twice, and I would have this week, too, but I decided to leave some i’s undotted.

From "In the Time of the Butterflies" by Julia Alvarez

“California is sending a powerful message that there is no place for paraquat in modern agriculture,” said Bernadette Del Chiaro, senior vice president of the nonprofit Environmental Working Group, which sponsored Friedman’s legislation.

From Los Angeles Times Aug. 11, 2026

“This is my journey, I’m telling it. This is what it is. You can take what you want away from it,” Amabile said on the podcast.

From Los Angeles Times Aug. 11, 2026

Direct Relief is a nonprofit organization that focuses on providing medical resources to populations facing crisis and emergency situations.

From Los Angeles Times Aug. 11, 2026

“Bachelorette” alum Joe Amabile is home following brain surgery.

From Los Angeles Times Aug. 11, 2026

At one low point, she is so destitute that she walks into a pawn shop—a store that gives money in exchange for valuables—and pawns her Medal of Freedom.

From "At Last She Stood" by Erin Entrada Kelly

“We got the good news that it wasn’t enhancing and we got the concerning news that it still was something. It wasn’t nothing,” Pitt said on the podcast.

From Los Angeles Times Aug. 11, 2026

"It's what we call a shell game," said McDonald, who drove one of the vehicles during the Bush administration.

From BBC Aug. 11, 2026

"This is part of our separation from Meta; we must take this step to comply with regulatory requirements in specific parts of the world," Manus said in a blog post.

From Barron's Aug. 11, 2026

“Customer demand is accelerating as enterprise adoption broadens and we continue to deepen our technology platform.”

From MarketWatch Aug. 11, 2026

If we were cattle, we’d be heading all the way to Kansas.

From "Will’s Race for Home" by Jewell Parker Rhodes

"You feel anguish. Every time there is an alert about someone being alive, hope is reborn that we will find him," Gallego tells me emotionally.

From BBC Aug. 11, 2026

"Since yesterday, I got here and I haven't left. Until they give me the body, I'm not leaving this place," Gonzalez tells AFP.

From Barron's Aug. 11, 2026

Sandra seemed stuck: Some minority professors supported the requirement, while others, like me, did not.

From The Wall Street Journal Aug. 11, 2026

Krylova then led me to the wall of herbs, offering two cooling blends that can be made into tea at home.

From Los Angeles Times Aug. 11, 2026

He has it with him now as Joey, alarmed, says, “Give it to me, quickly!”

From "At Last She Stood" by Erin Entrada Kelly

Fabi Reyna: It hit us by the end of the first session.

From Los Angeles Times Aug. 11, 2026

"He will be greatly missed by all of us," the statement from the firm added.

From BBC Aug. 11, 2026

The data probably will never tell us reliably how much fossil fuels were responsible.

From The Wall Street Journal Aug. 11, 2026

Presidents rightly expect more security than the rest of us, but that typically comes with greater scrutiny of their locations and activities too.

From Slate Aug. 11, 2026

When we’re done with the meal, Arlo and I cut into the triple-chocolate cake that Aunt J picked up for us after work.

From "Split the Sky" by Marie Arnold

In 2026 there have been multiple hits to production worldwide and to accommodate for this, Price adjusts his global mine supply forecast by 3.5% every year.

From MarketWatch Aug. 11, 2026

Humanity is still a long way from operating its first mine in space.

From Science Daily Aug. 7, 2026

Her eyes penetrated mine as I waited for a loud Tibetan gong to sound.

From Los Angeles Times Aug. 7, 2026

The bank raises its share-price target to A$13.00 from A$12.00 to reflect increased expected mine life and output at some operations.

From The Wall Street Journal Aug. 7, 2026

Her eyes, brown like mine, stare into the wilderness.

From "Will’s Race for Home" by Jewell Parker Rhodes

Bonus: my car smelled sublime — minty and fresh — the entire way home.

From Los Angeles Times Aug. 11, 2026

Reports in local media, such as one from Blu Pacífico radio, spoke of six survivors up until a few minutes before my arrival, including an infant only a few months old.

From BBC Aug. 11, 2026

"That's not my job. I cover the president. Reporters take risks as part of the job, but not on behalf of the president."

From Barron's Aug. 11, 2026

During our exchange, she noted that my views on academic freedom were also found among “faculty with libertarian leanings.”

From The Wall Street Journal Aug. 11, 2026

Wrapping my arms about Midnight’s neck, I murmur, “You did good. You did good.”

From "Will’s Race for Home" by Jewell Parker Rhodes

“California will keep moving toward pest management practices that protect health and our ecosystems.”

From Los Angeles Times Aug. 11, 2026

"Costs across Edinburgh in August have risen significantly, particularly accommodation, and our festivals are actively grappling with those issues - albeit with no direct control over them," she explained.

From BBC Aug. 11, 2026

"As migrants, we've already been through some tough things back in our own country, and you never imagine something like this would happen on top of that," said the 28-year-old construction worker.

From Barron's Aug. 11, 2026

“CoreWeave reached an important inflection point this quarter as our scale began to translate into expanding operating leverage,” CEO Michael Intrator said in a press release.

From MarketWatch Aug. 11, 2026

Is it our ability to walk on two feet?

From "Phineas Gage" by John Fleischman

Salzburg’s worries are our worries; its triumphs can be ours as well.

From Los Angeles Times Aug. 5, 2026

As much as we might wish otherwise, Kylie Jenner and Taylor Swift are not like us, and we cannot measure their autonomy and power on the same scale as ours.

From Slate Aug. 5, 2026

Anthropic added that it is "approaching the fixes as if the responsibility were ours alone."

From BBC Jul. 31, 2026

Dogs in art, Mr. Laqueur suggests, “bring their world into ours, which is perhaps how they make us feel less lonely as a species.”

From The Wall Street Journal Jul. 17, 2026

There are other meetings like ours being held, petitions being passed around, and calls for action.

From "The (Mostly) True Story of Cleopatra's Needle" by Dan Gutman

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