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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  
/ 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 2 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. 3 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- 4 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 5 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 6 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 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:

YouTube surpassed Netflix in average daily viewing time in 2025, according to research firm Digital i, cited by TechCrunch.

From Barron's Jul. 16, 2026

Seven & i Holdings 3382 -0.05%decrease; down pointing triangle raised its annual guidance after the war-driven surge in gasoline prices boosted earnings at its North American convenience-store business, sending quarterly net profit higher.

From The Wall Street Journal Jul. 9, 2026

YouTube surpassed Netflix in average daily viewing time in 2025, according to research firm Digital i cited in TechCrunch.

From Barron's Jul. 7, 2026

Andy Burnham's expected vow to "lift Britain back up" comes with what The i Paper calls the "biggest ever power transfer."

From BBC Jun. 28, 2026

“Do not lie, Olanna Ozobia, i sikwana asi!”

From "Half of a Yellow Sun" by Chimamanda Ngozi Adichie

"We shared memories that will last for a lifetime and I lived a childhood dream to represent my country at a World Cup. We will be back, mark my words."

From BBC Jul. 17, 2026

"I wouldn't say they need to be worried. But they shouldn't be still," to maintain their edge, Abbass told AFP.

From Barron's Jul. 17, 2026

"In the last two years I think we've had around 20 players come through those franchises and go on to play for the Pumas."

From BBC Jul. 17, 2026

"I believe these amendments carry the risk of undermining public support for the symbolic Emperor system."

From Barron's Jul. 17, 2026

I am finally here, she thinks, and she is happy to leave it at that.

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 Aikin, Lucy

Numbered footnotes in Sections I-VII of the Introduction have been relocated to the end of the Introduction and marked with an "i-".

From Benjamin Franklin Representative selections, with introduction, bibliograpy, and notes by Jorgenson, Chester E.

From the new sovereign substantial benefits as well as flattering distinctions awaited him, being reinstated-266--vol i- by her in the possession of his confiscated estates and appointed a privy-councillor.

From Memoirs of the Court of Queen Elizabeth by Aikin, Lucy

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

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

From Textbooks Mar. 30, 2016

Combining the results from parts i. and ii., draw a rough sketch of f .

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

Randolph, speech in Congress, i. 45-51; sketch of, i.

From The Second War with England, Vol. 2 of 2 by Headley, Joel Tyler

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

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

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

So did I. The World Cup is over in less than two weeks, and France and Spain are currently the 1-2 favorites to win the thing.

From Los Angeles Times Jul. 8, 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

Morris’s mother and father, respectively, were an accomplished organist and a mechanic who had been gassed in World War I. Like Waugh, Morris boarded as a teenager at Lancing College in West Sussex, England.

From The Wall Street Journal Apr. 23, 2026

Yes, Jonny didn't play up to scratch but neither did I. I was trying too hard because I wanted to win.

From BBC Mar. 26, 2026

When an hour had elapsed on the clock, I. A. Horowitz, the referee, declared the game forfeited.

From "Endgame" by Frank Brady

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

I E -i formed abstracts and nouns of agency; I E ar go; Min ari, way, track, trail.

From The Dakotan Languages, and Their Relations to Other Languages by Williamson, A. W. (Andrew Woods)

The suffix -i, added to a noun stem, forms generally a neuter verb.

From The Mafulu Mountain People of British New Guinea by Williamson, Robert Wood

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 Downer, Charles Alfred

The medieval Cloth Hall and St. Martin’s Church were two of the most prominent monuments in Ypres, Belgium, and among World War I’s early casualties.

From The Wall Street Journal Jul. 15, 2026

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

"I's a very different offering up there. You've still got beaches, but then you've got greenery and mountains and wildlife."

From BBC Apr. 18, 2026

“I don’t carry beef with people. And I’m not going to get into the history of Doc and I’s relationship right now. And I probably won’t ever. He’s fine in my book.”

From Los Angeles Times Oct. 10, 2024

“Mama hear me hollering and drop her load and run just as hard out at me. I feels like I’s swimming I’s looking through so many tears.”

From "Elijah of Buxton" by Christopher Paul Curtis

She has now written her autobiography, entitled "Is That You, Petula?"

From Barron's Jul. 17, 2026

"Is he apologising because he can't get his facts right or is he apologising for the hurt he's caused me?" he said.

From BBC Jul. 15, 2026

Kalshi also opened markets on “Dancing With the Stars,” “Love Is Blind” and “The Traitors.”

From Los Angeles Times Jul. 15, 2026

Appeared in the July 14, 2026, print edition as 'The Future Is Gridlocked'.

From The Wall Street Journal Jul. 13, 2026

Is she here to tell me that I can’t go to Sunridge, that I have to live with him, that I have no choice but to do what he wants?

From "Red Flags and Butterflies" by Sheryl Azzam

"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

The deputy chief told Boyd that Spivey’s body was towed “to make sure that every i’s dotted, t’s crossed to clear you.”

From The Wall Street Journal Dec. 21, 2025

“I know sometimes people feel like, why hasn’t there been more information? But again, just trying to make sure we have i’s dotted and t’s crossed.”

From Los Angeles Times Feb. 26, 2025

A Japanese company of Seven & i's size has never been bought by a firm from overseas.

From BBC Oct. 8, 2024

At Swarthmore, Libbi got all A’s and B’s and started to spell her name with two i’s.

From "Woe Is I" by Patricia T. O'Conner

"It is played in every corner of the country, not only in Buenos Aires but in every province."

From BBC Jul. 17, 2026

"It's very close to Tucuman, which is a huge rugby province. I'd expect a proper rugby crowd," the 48-year-old added.

From BBC Jul. 17, 2026

"Tom Curry is a world-class player. That's the only thing I can say," Contepomi added.

From BBC Jul. 17, 2026

"The dimension is completely different. Even myself, I live for rugby, but football is still in my skin."

From BBC Jul. 17, 2026

The obituary states that she has no immediate survivors, but of course, that is not true.

From "At Last She Stood" by Erin Entrada Kelly

"Don't let the unity and love we've seen in our country end with this campaign. When we're together we can achieve big things," the Real Madrid player said.

From BBC Jul. 17, 2026

"We're all very worried about that, and they're actually saying eventually AI will have emotion, and even that's a little worrying -- where do we go from there?" said Clark.

From Barron's Jul. 17, 2026

“While we continue to expect modest USD appreciation by year-end, near-term upside is likely to remain capped without a fresh catalyst,” the strategists add.

From The Wall Street Journal Jul. 17, 2026

"As soon as we became aware of the outcome, we took immediate steps to contact families and provide reassurance and support," Wall said.

From BBC Jul. 17, 2026

Slowly, we maneuver down the rise into and through the crowded Main Street.

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

Kreitzman gave me a Masai beaded collar, bought ethically from a female Kenyan designer, to work with.

From BBC Jul. 17, 2026

"No one can give me back my original appearance, because a lot of fat and skin have been removed," she said.

From Barron's Jul. 17, 2026

“We’ll downsize when they plant me 6 feet into the ground,” said Victor, 64.

From The Wall Street Journal Jul. 17, 2026

He told me the same in 2020 when there were murmurings of reform to the formula.

From BBC Jul. 17, 2026

Her body heat warms me, calms my shivering.

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

“What stood out to us is there’s a disconnect between expectations and reality,” said Deb Boyden, head of U.S. defined contributions at Schroders.

From MarketWatch Jul. 17, 2026

Scientists are just starting to measure the levels of microplastics in us.

From The Wall Street Journal Jul. 17, 2026

A council spokesperson said: "At no point have the police informed us that any children in care were involved in this case."

From BBC Jul. 17, 2026

"It's the biggest thing that will ever happen to any of us," Connor adds.

From BBC Jul. 16, 2026

He’d made it a point to tell us that dating outside of his race didn’t mean he was rejecting Black women.

From "Split the Sky" by Marie Arnold

In December, Washington pledged $1.25 billion for Balochistan's Reko Diq copper and gold mine.

From Barron's Jul. 17, 2026

Even at the lowest point of a wind turbine, Witek expresses his awe at "the feeling of freedom" compared to the fourteen years he spent at the bottom of a mine.

From Barron's Jul. 17, 2026

Evolution also points to an up to A$60 million rise in sustaining expenditure, and A$130 million-A$160 million of higher mine development costs.

From The Wall Street Journal Jul. 15, 2026

Announcing its decision to close the Venetia mine, De Beers said it needed to cut costs and streamline operations given the depressed state of the world diamond market.

From BBC Jul. 14, 2026

His gaze stiffens on mine and his lips fold shut.

From "Red Flags and Butterflies" by Sheryl Azzam

"She saw my bracelets that I wearing and she just came at me," chuckled Joseph.

From BBC Jul. 17, 2026

"I couldn't open my eyes, my oxygen saturation and blood pressure had dropped," she said, after developing an angioedema -- a swelling in the under-skin tissue -- from the medication she received.

From Barron's Jul. 17, 2026

“Our strategy is working. We are attracting a broad range of luxury customers across product categories, channels and geographies, reinforcing my confidence in the opportunities ahead,” Chief Executive Joshua Schulman said.

From The Wall Street Journal Jul. 17, 2026

"I changed my daughter's nappy in front of him," she said.

From BBC Jul. 17, 2026

Frowning, Father murmurs, “That’s my fault. I thought it’d be easier on you not to have any friends. Or a sister or brother.”

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

"Another fantastic opportunity for our men's team to challenge for silverware, with learnings from this tournament and even more support from our brilliant fans to look forward to. Onwards."

From BBC Jul. 17, 2026

A US State Department spokesperson said the two countries "continue to identify areas of cooperation that benefit our nations related to trade and some security priorities".

From Barron's Jul. 17, 2026

While our bodies likely eliminate some, others accumulate in our bodies.

From The Wall Street Journal Jul. 17, 2026

"We have consistently made clear our expectations that charges should reflect the gravity of the tragedy. This includes the Prime Minister and I expressing these expectations directly to our respective counterparts."

From BBC Jul. 17, 2026

He’s remembering how hard our journey was—the weariness, the cold, the dangers on land and the treacherous waters.

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

Ideally, I need to get to $250,000 to buy a modest apartment so my kid can have a place that is ours and has no debt associated with it.

From MarketWatch Jul. 14, 2026

"Each time that the other party has failed to meet its obligations, we did not uphold ours," he added.

From Barron's Jul. 13, 2026

Last week, at an event in Washington, House Speaker Mike Johnson reminded the audience of one of John Quincy Adams’ favorite lines: “Duty is ours; results are God’s.”

From Salon Jul. 10, 2026

The Washington monument is both architecture and sculpture, a powerful symbol with layered meanings for different generations from Washington’s time to ours.

From The Wall Street Journal Jul. 3, 2026

I felt in me an embarrassing sense of pride that she was ours.

From "Missing May" by Cynthia Rylant

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