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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:

Buckingham Palace is "on the defensive", the i Paper reports.

From BBC Sep. 17, 2026

The i says this ISA would pay a bonus when a buyer purchases their first property and that it could be unveiled at the upcoming Budget.

From BBC Sep. 8, 2026

The deal would mark Couche-Tard’s largest-ever acquisition after it abandoned a $47 billion takeover attempt of Seven & i, the Japanese owner of 7-Eleven, last year.

From The Wall Street Journal Sep. 1, 2026

David Zwirner presents Roy DeCarava’s “the sound i saw,” bringing together photographs taken in the late 1940s and 1960s.

From Los Angeles Times Sep. 1, 2026

Some pepple people have the gift of writtin writing i think I must of been sleep when that gift was given out.

From "Stella by Starlight" by Sharon M. Draper

"I just think I'm so fortunate that I was in a sport where everybody accepted that you have men and women's races in the Olympics."

From BBC Sep. 18, 2026

I wish the Eastern Bloc system hadn't been there, but that's what it was.

From BBC Sep. 18, 2026

"And I think that the police's urgency to get him arrested and the urgency to get it in the press, I think he couldn't understand why there wasn't an urgency to help clear his name."

From BBC Sep. 18, 2026

Lee said Friday it was "clear" that "Trump wants dialogue, and I am also urging President Trump to engage in dialogue."

From Barron's

“I won’t tell,” I promise, hoping Father will smile at me.

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

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

In furtherance of the design, several of her gentlemen had already taken their departure for that city, and Flemish light vessels were observed to keep watch on the English-112--vol i- coast.

From Memoirs of the Court of Queen Elizabeth by Lucy Aikin

And she would frequently assure them that she would take a particular care of their affairs, and she would-277--vol i- ever be as good as her word.

From Memoirs of the Court of Queen Elizabeth by Lucy Aikin

A remarkable incident soon served to intimate the coolness and caution with which it was her intention-254--vol i- to proceed in re-establishing the maxims of the reformers.

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

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

The whole subject of the vision of St. Gregory is discussed by Champagny, Les Antonins, tome i. pp. 372-373.

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

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

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

There is a gorgeous, heartbreaking story about a piano prodigy in France during World War I. The final story concerns the marriage between a Dutch clockmaker and a theoretical physicist.

From The Wall Street Journal Aug. 18, 2026

In that way, I feel creatively redeemed on some level, just in my own journey between me, myself and I. But I feel ready to move on from the ‘Blade’ questions.

From Los Angeles Times Aug. 3, 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

New York City’s mayor Edward I. Koch wrote him a letter trying to convince him to come back to the chessboard.

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

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

Its inflections are -as present, -is preterite, -os future, -us conditional, -u imperative and subjunctive, -i infinitive, together with the following participles:—   Active.

From Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 7 "Equation" to "Ethics" by Various

Thus final -o bespeaks a noun; -a, an adjective; -e, an adverb; -i, an infinitive, etc.

From International Language Past, Present and Future: With Specimens of Esperanto and Grammar by Walter John Clark

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

Another important part of Victor I's legacy was to introduce Latin as the common language of the Catholic Church.

From BBC Apr. 28, 2025

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

All I'm thinking is how I's the one that set him to dusting.

From "How It Went Down" by Kekla Magoon

Is the iPhone Duo discriminating against left-handed users?

From The Wall Street Journal Sep. 17, 2026

Is this a good time to take out a HELOC?

From MarketWatch Sep. 16, 2026

Is it control of self-replicating armies of autonomous drones, or a cancer-free utopia that hits Type II on the Kardashev scale?

From Salon Sep. 16, 2026

"Is your ability to look after yourself changing? Are you able to decompress from work? Is your sleep OK?"

From BBC Sep. 15, 2026

Is this about the lies he told the CPS worker?

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

It’s just making sure our i’s are dotted and our t’s are crossed.

From The Wall Street Journal Mar. 30, 2026

“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

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

The auction comes ahead of the release of Marr's first studio album in four years, The Age Of Everything, which is due out on 2 October.

From BBC Sep. 18, 2026

"They created a theatre of 750 seats in the round, a democratic arena where the alchemy between actor and audience is at its most purest form and they've created something that still feels fresh today."

From BBC Sep. 18, 2026

When customers asked why their drink was free, his staff told them "because Harry Styles is buying everyone's coffee today," he said.

From BBC Sep. 18, 2026

The earliest date for a decision by the Parades Commission on the planned Drumcree march by Portadown Orange Order is 23 September – four days before the scheduled parade.

From BBC Sep. 17, 2026

Spanish influence in the Philippines is evident in the country’s language, religious practices, surnames, and culture.

From "At Last She Stood" by Erin Entrada Kelly

"At my age you don't know how many years you have left, and this has given me three years-plus of stress but now we have proven they blocked our rights."

From BBC Sep. 18, 2026

“With short positioning stretched and Fed pricing aggressive, we expect the 10Y Treasury yield to consolidate in a 4.90-5.10% range for now.”

From The Wall Street Journal Sep. 18, 2026

Bamboo, which runs one of the most popular investor tools here, later apologised, saying: "We know we let you down."

From BBC Sep. 17, 2026

"There is no improvement anywhere, and when things evolve in a way that every day things get a little bit worse, we are at a serious risk of an explosion."

From Barron's

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

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

“It was quite an image that is very vivid to me right now.”

From Los Angeles Times Sep. 18, 2026

"At my age you don't know how many years you have left, and this has given me three years-plus of stress but now we have proven they blocked our rights."

From BBC Sep. 18, 2026

She added: "I had part of high school online because of Covid so I already knew how to use recorded content for learning so it felt very natural for me."

From BBC Sep. 17, 2026

This summer it occurred to me that my understanding of alignment might be wrong.

From The Wall Street Journal Sep. 17, 2026

Just like Father was conflicted before deciding to bring me on the Oklahoma trail.

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

“We thank the researchers for contacting us and sharing their findings. We narrowed the permissions on Community sign-in tokens and revoked affected tokens and sessions,” the company said.

From The Wall Street Journal Sep. 18, 2026

It wants us to stockpile canned food and drinking water, strengthen our civic resilience, and plan for the possibility of war.

From BBC Sep. 17, 2026

“The school won’t allow us to practice until Wednesday and we’ll still be day-to-day after that.”

From Los Angeles Times Sep. 17, 2026

Sunday will tell us much about the way of things between the Glasgow giants.

From BBC Sep. 17, 2026

“That doesn’t really tell us much,” she says, deflated.

From "Split the Sky" by Marie Arnold

Oblivious to her own biases about who Leo is and why, Mallory poses as a therapist keen on saving his life, but uses their faux sessions to mine his story for literary gold.

From Los Angeles Times Sep. 15, 2026

"Macklemore coming off tour was the promoter's decision, it was not mine," Sheeran wrote in a lengthy Instagram post, adding that the rapper's contract was ended by the promoter, Messina Touring Group.

From Barron's Sep. 15, 2026

The Revolutionary Guards said the vessel, Sidr, caught fire after hitting a naval mine.

From BBC Sep. 15, 2026

“Increased mining rates at Break of Day following the Stage 2 cutback, along with mine life extensions at Penny, should drive higher head grades through FY27 and FY28,” says the broker.

From The Wall Street Journal Sep. 14, 2026

His eyes linger on mine for a longer-than-normal moment before he darts past Zara into the house.

From "Red Flags and Butterflies" by Sheryl Azzam

Marr said: "The auction has been a great experience and has exceeded all my expectations. I'd like to thank everyone who made bids and special thanks to Christie's for making it so memorable."

From BBC Sep. 18, 2026

“I’ve met thousands of people over my 50 years in politics and LeRoy stands tall among them.”

From Los Angeles Times Sep. 18, 2026

“As if I had to go to the back of the line and wait my turn,” Mr. Guimarães says, bewildered.

From The Wall Street Journal Sep. 18, 2026

"Over the last couple of months my whole TikTok and Instagram is just people learning to drive. It's like my algorithm knows, it's quite scary," she said.

From BBC Sep. 17, 2026

I remind myself that, like it or not, I have to find a way to clear my head of all the drama and chaos.

From "Split the Sky" by Marie Arnold

"That shows you that our strategy is definitely working."

From BBC Sep. 18, 2026

Mark Bernstein, then-board chair, said at the time it would be tantamount to “selling our soul to private capital.”

From The Wall Street Journal Sep. 18, 2026

Nick Robinson has a conversation with, not an interrogation of, the people who shape our political thinking about what shaped theirs.

From BBC Sep. 18, 2026

“No family should have to suffer the loss of a child, and our thoughts continue to be with the Normandin-Parker family,” an Uber spokesperson said in a statement.

From Los Angeles Times Sep. 17, 2026

In our time, we control most epileptic symptoms with powerful drugs called "anticonvulsants," because uncontrolled seizures can cause their own brain damage.

From "Phineas Gage" by John Fleischman

He said the premium still felt like a "death tax" and the family were being "penalised through no fault of ours".

From BBC Sep. 7, 2026

Dolly was one of us, ours, but of course she was also much more.

From Salon Aug. 26, 2026

It’s offensive because cases like ours could have been settled for significantly less than what the verdict is.”

From Los Angeles Times Aug. 22, 2026

But if we don’t sustain their vitality, how will they sustain ours?

From The Wall Street Journal Aug. 21, 2026

Like most private telephones ours had been disconnected early in the occupation.

From "The Hiding Place" by Corrie ten Boom

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