once

1 of 4

adverb

1
: one time and no more
rode a horse only once
went skydiving once
2
: at any one time : under any circumstances : ever
didn't once thank me
3
: at some indefinite time in the past : formerly
was once a booming mining town
4
: by one degree of relationship
first cousin once removed

once

2 of 4

noun

: one single time : one time at least
Please be on time this once.

once

3 of 4

adjective

: that once was : former
… contributions to enrich the legal resources of the once province of Britain.J. N. Pomeroy

once

4 of 4

conjunction

: at the moment when : as soon as
Once she spoke, I recognized her.
Phrases
once and for all
1
: with finality : definitively
The team proved once and for all that they are the best.
2
: for the last time
I'm telling you once and for all that I'm not going.
once in a while
: now and then
spent most of their time at home, but went out once in a while
at once
1
: at the same time : simultaneously
2
3
: both entry 2
at once funny and sad

Examples of once in a Sentence

Adverb I will repeat the question once. The play was performed only once. She didn't once thank me. He didn't look at me once. It was once done that way. A river once flowed through this canyon. It was once a booming mining town. Their music was once very popular. Noun I have tried Indian food more than once. Please be on time just this once. For once you seem to know what I'm talking about. Adjective the once child star is now a lawyer in the entertainment industry Conjunction Once she spoke, I recognized her. you should have stopped wrestling once you knew someone was getting hurt, not five minutes later
Recent Examples on the Web
Adverb
If the producer wants to use an Employment Based Digital Replica for another project, including a sequel or prequel, the producer must once again obtain the actor’s consent and negotiate separate pay for that use. Dan Stone, The Hollywood Reporter, 10 Apr. 2024 Kane was all smiles during the warmup on Tuesday night, clearly relishing once again being behind enemy lines. Matias Grez, CNN, 10 Apr. 2024 But If your skin is more on the sensitive side of the spectrum, my suggestion is to only use gentler acids like lactic, mandelic or salicylic once a week to keep the skin smooth and bright. Samantha Mims, Essence, 10 Apr. 2024 The ranch was once owned by Rusty Lyon, a founder of Westcor, which developed some of the most prominent Arizona shopping centers, including Scottsdale Fashion Square. Catherine Reagor, The Arizona Republic, 10 Apr. 2024 One writer found out Written by Brad Sanders | Eccentrics, rejoice—Sleepytime Gorilla Museum’s doors are open to the public once again! Brad Sanders, SPIN, 10 Apr. 2024 The four-bedroom residence is on the fourth floor of an Art Nouveau-style apartment house in Mayfair that stands on the site of an 18th-century Georgian mansion once occupied by royalty. Emma Reynolds, Robb Report, 10 Apr. 2024 His vegetarian daughter once took him to a vegan restaurant where Joo tried soy meat for the first time. Min Joo Kim, Washington Post, 1 Apr. 2024 These cookies, once indispensable tools for understanding and targeting consumers, are giving way to a new era—one that prioritizes privacy and direct engagement. Carol Howley, Forbes, 29 Mar. 2024
Noun
Here are some highlights of ready-to-wear collections Thursday: GIVENCHY GETS FEMININE The once-street and urban Matthew M. Williams uttered a word not often heard describing his designs: Elegant. Thomas Adamson, ajc, 2 Mar. 2023 Continuing, Belloni pointed out that internal company data apparently suggests that stretching out the release cadence of Netflix shows to a weekly rollout, instead of an all-at-once drop, won’t meaningfully reduce subscriber churn. Andy Meek, BGR, 10 Sep. 2022 Taylor is a once in a generation artist and storyteller. Kathleen Walsh, Glamour, 9 Dec. 2022 Our memories of these spaces are bound up in their blaring, everywhere-at-once noise. K. Austin Collins, Rolling Stone, 24 Oct. 2022 And on Friday, multiple blogs and news sites declared an even bigger change is coming: A larger, maybe even a complete, shift away from the all-at-once-release of Netflix shows. Andy Meek, BGR, 10 Sep. 2022 One similarity between the Orca and an EV is the all-at-once, better-be-ready throttle response. Dan Neil, WSJ, 28 July 2022 The platform on at least two occasions has blocked Raichik’s ability to tweet - once for 12 hours in April, and then again for a week in a sanction that ends Saturday. Taylor Lorenz, Elizabeth Dwoskin and Peter Jamison, Anchorage Daily News, 3 Sep. 2022 The Chabad of Glencoe event celebrated what was a once in a lifetime opportunity for many to witness the completion of an inked Torah scroll. Karie Angell Luc, Chicago Tribune, 30 Aug. 2022
Adjective
Winners of six straight games, the Warriors effectively clinched the No. 10 seed in the Western Conference on Thursday night with a win over the Rockets, giving them a four-game lead and a tiebreaker over their once rivals with six games to play. Dieter Kurtenbach, The Mercury News, 5 Apr. 2024 In December, a clip of T-Pain singing the song — without his once signature use of Auto-Tune — became a viral sensation, accruing 2.8 million views on his TikTok account and 2 million on Instagram. David Browne, Rolling Stone, 2 Feb. 2024 Cryptocurrency advocates hope the development thrusts the once niche and nerdy corner of the internet even further into the financial mainstream. TIME, 11 Jan. 2024 The once grand building is collapsing under the weight of centuries of evil and, more recently, decades of hoarding. Jesse Green, New York Times, 18 Dec. 2023 Over the last fourteen years, RuPaul’s Drag Race has transformed a once niche art into a global business. Hugh Ryan, Curbed, 12 Sep. 2023 Her meeting with Bass' children comes weeks after the once boy band member alleged that Spears bailed on meeting his children after a request was made by her team to schedule a visit. Morgan Hines, USA TODAY, 25 July 2023 John Cheever, Joseph Heller, Doris Lessing, Chaim Potok and Ray Bradbury were among his clients, along with Katharine Graham, the once publisher of the Washington Post. J. Kim Murphy, Variety, 14 June 2023 The once fringe term, associated with the idea that AI poses an existential risk to humanity, is central to OpenAI’s mission and had been embraced by DeepMind, but was avoided by Google’s top brass. Gerrit De Vynck, Washington Post, 4 May 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'once.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Adverb, Noun, Adjective, and Conjunction

Middle English ones, from genitive of on one

First Known Use

Adverb

12th century, in the meaning defined at sense 1

Noun

13th century, in the meaning defined at sense 1

Adjective

1620, in the meaning defined above

Conjunction

1747, in the meaning defined above

Time Traveler
The first known use of once was in the 12th century

Dictionary Entries Near once

Cite this Entry

“Once.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/once. Accessed 18 Apr. 2024.

Kids Definition

once

1 of 3 adverb
1
: one time only
will repeat the question once
2
: at any one time : ever
once you hesitate, it's too late
3
: at some time in the past : formerly
it was once done that way
4
: by one degree of relationship
cousin once removed

once

2 of 3 noun
: one single time
just this once

once

3 of 3 conjunction
: as soon as
once that is done, all will be well

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