FILL IN Synonyms: 79 Similar and Opposite Words

fill-in 1 of 2

noun

ˈfil-ˌin

Definition of fill-in

as in substitute

a person or thing that takes the place of another I'm just a fill-in, so I have no idea where office supplies are kept

Synonyms & Similar Words

Relevance

fill in

2 of 2

verb

as in to inform

to give information to my friend quickly filled me in on the portion of the movie that I had missed

Synonyms & Similar Words

Antonyms & Near Antonyms

as in to substitute

to serve as a replacement usually for a time only she's only filling in while the regular secretary is on vacation

Synonyms & Similar Words

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of fill-in

Noun

Injury fill-in Jovo Lukic headed in a corner kick in the 21st minute for Bosnia-Herzegovina, which is making its second World Cup appearance after failing to advance out of group play in 2014. — John Wawrow, Hartford Courant, 12 June 2026 In 2022, the civil grand jury found evidence of mutual distrust between Cupertino City Council members and city staff, which led to a long line of resignations and fill-ins in the city manager’s position. — Nollyanne Delacruz, Mercury News, 11 June 2026

Verb

Speaking with Goldman Sachs’s Raj Mahajan at the firm’s Apex Symposium on June 2 — audio Fortune has exclusive, embargoed access to — Griffin filled in the blanks. — Nick Lichtenberg, Fortune, 9 July 2026 Couric then handed the virtual mic to Molner, who filled in some of his wife’s blanks. — Theresa Braine, New York Daily News, 9 July 2026 See All Example Sentences for fill-in

Recent Examples of Synonyms for fill-in

Noun

There’s also no substitute for the sense of control, purpose, and fulfillment that comes from creating and executing a vision.

— Naveen Jain, Fortune, 9 July 2026
Rohmer’s great literary achievement is twofold—artistic success and worldly failure—which gave rise to his cinema of substitute gratifications, second chances, and miraculous redemptions.

— Richard Brody, New Yorker, 9 July 2026

Definition of substitute

Verb

Emergency responders arrived on the scene and were informed that the victim had been pulled by the current flowing through Sebonac Creek into the Great Peconic Bay, the statement said.

— Megan Fahrney, ABC News, 6 July 2026
The company also informed members about 2026 premium changes through phone calls, text messages, regular mail, or email, Baiocchi said.

— Susan Jaffe, NPR, 6 July 2026

Definition of inform

Verb

For many students, financial barriers stand in the way of educational opportunities and job training.

— Sivan Hines, Hartford Courant, 9 July 2026
But shoppers who stand in its reflection can see themselves in a new light, wearing outfits without having to try them on.

— Roy Stephen Canivel, Footwear News, 8 July 2026

Definition of stand in

Noun

But for all Regragui’s success, replacement Mohammed Ouahbi is even more closely aligned to the national team DNA, having been in charge of the victorious under-20s side prior to stepping up.

— Chris Evans, Forbes.com, 9 July 2026
The lawsuit alleges the replacement tickets many fans were given by StubHub were worse than their original tickets.

— Lily Wright, Los Angeles Times, 9 July 2026

Definition of replacement

Verb

The deal is expected to be completed next summer, when the Morrison YMCA at 9405 Bryant Farms Road in Ballantyne would close and Moments of Hope would take over.

— Charlotte Observer, Charlotte Observer, 10 July 2026
This family-run collection of hotels began in the 1960s when an Italian businessman took over a stunning property in Porto Ercole, previously a hangout for international socialites.

— Megan Rose Murray, Condé Nast Traveler, 10 July 2026

Definition of take over

Noun

The Warriors already let backup point guard Pat Spencer walk to Phoenix.

— Joseph Dycus, Mercury News, 6 July 2026
The Illinois Tollway plans to reduce backups at the congested nexus by adding lanes to northbound and southbound I-355 in the Downers Grove area as well as ramp improvements.

— Marni Pike, Chicago Tribune, 5 July 2026

Definition of backup

Verb

Enterprises are advised to carefully evaluate these solutions based on ownership, cost, and enforcement, as the industry seeks to standardize this critical layer for AI agent deployment.

— Janakiram MSV, Forbes.com, 6 July 2026
To minimize risks during outdoor work, the Occupational Safety and Health Administration (OSHA) advises incorporating frequent rest breaks in shaded or air-conditioned areas.

— CA Weather Bot, Sacbee.com, 6 July 2026

Definition of advise

Browse Nearby Words

fillies

fill-in

fill in

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Style

“Fill-in.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fill-in. Accessed 12 Jul. 2026.

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Synonyms of fill-in

noun

verb

Example Sentences

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