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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  

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 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  
  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  

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 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:

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

For the fiscal year that began in March, Seven & i now expects revenue to be flat at Y10.43 trillion and net profit to decline 5.0% to Y278.00 billion.

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

Former Deputy Prime Minister Angela Rayner "fights for Cabinet return with housing job pitch to Burnham", writes The i Paper.

From BBC Jul. 2, 2026

Exception 1.—Before ing or ish, the final y is retained to prevent the doubling of the i: as, pity + ing = pitying.

From New Word-Analysis by William Swinton

"Super Rugby Americas is growing every year and I think that's a good pathway for developing professional habits and preparing players," Contepomi said.

From BBC Jul. 17, 2026

"I think there's a lot of hesitation in hiring right now," said Ian Amit, CEO of the cybersecurity startup Gomboc AI.

From Barron's Jul. 17, 2026

"I wanted to help, because of what they've given to me over the years."

From BBC Jul. 17, 2026

"We already had a pretty lean team and very talented engineers, so the approach I took was, let's do more with the people that we have."

From Barron's Jul. 17, 2026

“Belle can only pull so much,” I say, anguished.

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

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 Aikin, Lucy

Cranmer-128--vol i- resisted for some time, but was at length won to compliance by the tears and entreaties of Edward.

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

Another time she visited the dissolved priory of St. Mary Spittle in Bishopsgate-street, which was noted for its pulpit-cross,-268--vol i- where, on set days, the lord-mayor and aldermen attended to hear sermons.

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

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

From Textbooks Mar. 30, 2016

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

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

Lewin's Birds of New Holland, fasc. i. pl.

From Zoological Illustrations, Volume I or Original Figures and Descriptions of New, Rare, or Interesting Animals by Swainson, William

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

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

Guy Fieri didn’t know about it, and neither did I. Oh no, he did.

From Los Angeles Times Apr. 26, 2026

In World War II, the British Army suffered half the losses they had in World War I. Yet civilian casualties were higher.

From The Wall Street Journal Mar. 27, 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

“Nor did I. But then I was asked to recommend two girls. Do you not think you are ready for it?”

From "The Brightwood Code" by Monica Hesse

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, 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 Sweet, Henry

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 Mann, William W.

Tarsus -i: the foot; the jointed appendage attached at the apex of tibia. bearing the claws and pulvilli.

From Explanation of Terms Used in Entomology by Smith, John. B.

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

He said, “Thank you, ma’am, I’s thinking the same thing. This just gunn be a disturbing that she don’t need right now.”

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

Appeared in the July 17, 2026, print edition as 'China’s Economy Is in Worse Shape Than You Think'.

From The Wall Street Journal Jul. 16, 2026

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

From Los Angeles Times Jul. 15, 2026

Is France against Spain on Tuesday in the semis the real final, as many are suggesting?

From BBC Jul. 14, 2026

Is there any way I’ve got the wrong day?

From "Code Name Kingfisher" by Liz Kessler

"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

And I don’t tend to favor biographies, because there generally are some tedious sections in the middle as the writer dots the i’s and crosses the t’s of the subject’s life.

From The Wall Street Journal Apr. 17, 2026

The i's Anna Bonet added Intermezzo is "mature and profound and feels like a culmination of everything she has done before".

From BBC Sep. 23, 2024

They want to make sure they're dotting all the i's and crossing all the t's, to make sure these are the correct identifications.

From Salon Oct. 17, 2023

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

"The good thing is that rugby started in Argentina among the middle class and upper middle class, but now it's played in every social class," said the former Leinster fly-half.

From BBC Jul. 17, 2026

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

From BBC Jul. 17, 2026

Given a bid to host the 2035 Rugby World Cup is being pressed forward by Argentina, the nation's love for the sport could explode.

From BBC Jul. 17, 2026

"This shirt is not only a lasting reminder of one of the most important moments in football history, but is principally connected to the very moment that catapulted Pele into a global sporting icon."

From BBC Jul. 16, 2026

There is nothing about the extraordinary life she lived.

From "At Last She Stood" by Erin Entrada Kelly

Burnham in his speech quoted the famous line attributed to Tony Wilson in the film 24 Hour Party People: "It's Manchester, we do things differently here."

From BBC Jul. 17, 2026

"We already had a pretty lean team and very talented engineers, so the approach I took was, let's do more with the people that we have."

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

"While no official advisory has been issued, we believe public health is a shared responsibility among restaurants, their suppliers, and authorities," the restaurant said.

From BBC Jul. 17, 2026

Like him and Grandpa, we share bittersweet memories.

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

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

From BBC Jul. 17, 2026

"It's going to be something very important for me, and very emotional too. It may be my last one; who knows?," she said.

From Barron's Jul. 17, 2026

“As difficult as it is to leave, it feels like the right time for me to begin a new chapter,” Brown said in a memo to staff.

From The Wall Street Journal Jul. 17, 2026

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

From BBC Jul. 17, 2026

“I wanted to go with my friends. Sukie’s son, Emery, was my best friend. Even picking cotton together, faint from heat, Emery made me laugh.”

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

"Now it's like a second home to me. It's one of those safe spaces for people who are LGBT, people who are looking to be mentored. Sue offers that safe space for us."

From BBC Jul. 17, 2026

"I had imagined us being together until we're old, her scolding me until we're old, but now I can't hear her voice any more."

From BBC Jul. 16, 2026

Dad takes out his cell and shows us a video on YouTube.

From "Split the Sky" by Marie Arnold

In the mine where he works, the tunnels run as deep as 1,300 metres below the surface.

From Barron's Jul. 17, 2026

"What I do is very personal, and it's mine; nobody can be me," she said.

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

The Venetia mine, in the far north of South Africa, accounts for more than 40% of the country's diamond production and employs more than 4,000 people.

From BBC Jul. 14, 2026

Betsie told me about each of her cellmates—and I told her about mine and the little hole into which they scrambled at any emergency.

From "The Hiding Place" by Corrie ten Boom

He said: "The other guests heard about my situation and made me feel welcome and we formed friendships. I feel wanted - it's given me meaning in life."

From BBC Jul. 17, 2026

"You couldn't even get your little finger in there. It's been a year and a half, but my eye still feels strained and I constantly want to force it open," she told AFP.

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

I wear two shirts beneath my sack jacket.

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

"Hopefully, if we give them a reason to shout and sing, Argentinians are Latin people - we make noise and we love supporting our teams. Hopefully it'll be a noisy crowd."

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

"Those are our challenges and that's our reality," the Argentina head coach added.

From BBC Jul. 17, 2026

I keep digging, punching posts into our lot’s boundaries.

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

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

"Although reportedly carrying a dummy warhead, no nation understands the weight of nuclear testing in Pacific waters better than ours," the statement added.

From Barron's Jul. 9, 2026

"We know everyone in this city, this city is ours," he boasted to a contact in a recording shared with the BBC.

From BBC Jul. 4, 2026

I was struck over and over by similarities between their times and ours, including: countrywide divisions, political name-calling, competing media outlets, new technologies, conspiracy theories, an addiction crisis, a pandemic, and the emphasis on fame.

From "American Spirits" by Barb Rosenstock

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