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

Hollywood icon Rosie O’Donnell has taken stock of — and shots at — the television landscape before making her temporary return to the talk show format as fill-in host of Jimmy Kimmel Live. — Joey Nolfi, Entertainment Weekly, 17 Aug. 2026 In fairness to all the backup tackles, Larry Borom struggled at this point last season, then became a decent fill-in starter for Jackson when he was sidelined by his foot injury. — Omar Kelly, Miami Herald, 9 Aug. 2026

Verb

Part of the issue is that as the economic hardships continue, more people are adding to their debt loads by turning to expensive, short-term borrowing options, like credit cards, to fill in the gaps. — Angelica Leicht, CBS News, 20 Aug. 2026 Gasper has filled in admirably for Yoshida, homering in his third straight game Wednesday. — Jen McCaffrey, New York Times, 20 Aug. 2026 See All Example Sentences for fill-in

Recent Examples of Synonyms for fill-in

Noun

Lawmakers could offer substitute proposals, with final votes after 100 hours of debate.

— Kevin Freking, Fortune, 27 Aug. 2026
Quinta de la Rosa Extra Dry White Port Perfumed with a note of pear, this offering is a great lower-alcohol substitute for gin or vodka in most cocktails but equally quaffable when splashed with tonic or seltzer.

— Joseph Hernandez, Bon Appetit Magazine, 26 Aug. 2026

Definition of substitute

Verb

Currently, there are three categories of vaccination recommendations granted by the Centers for Disease Control and Prevention, which is informed by a panel of independent expert advisors, the Advisory Committee on Immunization Practices (ACIP).

— Beth Mole, ArsTechnica, 24 Aug. 2026
Over the weekend, Bloomberg News reported Nvidia has informed customers of impending price hikes on AI servers due to memory costs.

— Jim Cramer, CNBC, 24 Aug. 2026

Definition of inform

Verb

It’s mainly centered on Billie, who is worried about an old Facebook post standing in the way of finding a job.

— Ben Rosenstock, Vulture, 28 Aug. 2026
Seven dogs surrounded and attacked a Charlotte woman standing in her yard, and three additional people were hurt while trying to help her, according to Charlotte-Mecklenburg Animal Care and Control.

— Mark Price, Charlotte Observer, 27 Aug. 2026

Definition of stand in

Noun

The superstructure on the Market Street Bridge over Amtrak and the Schuylkill Expressway is supposed to be partially demolished and then replaced, and replacements will be made to the sidewalk and decks adjacent to the bridge.

— Kaitlyn McCormick, USA Today, 26 Aug. 2026
The wireless connection can also allow equipment manufacturers to avoid adding openings specifically for battery replacement or charging.

— Neetika Walter, Interesting Engineering, 26 Aug. 2026

Definition of replacement

Verb

He was told to wait on a bench at the sixth station of the Fujinomiya trail as his father and brother continued their ascent, the report said.

— Chris Lau, CNN Money, 23 Aug. 2026
Rabah told The Associated Press that two settlers arrived with a tractor at his home in Khirbet al-Rakeez in the southern West Bank on Saturday afternoon.

— ABC News, ABC News, 23 Aug. 2026

Definition of tell

Noun

Still, Boutte had a stronger training camp than Hollins and Williams and likely would have served as a backup to Brown and Doubs.

— Doug Kyed, Boston Herald, 24 Aug. 2026
But Ewers has struggled this camp, as have Miami’s other backups, Cam Miller and Mark Gronowski, who was re-signed last week after Ewers’ his groin injury.

— Omar Kelly, Miami Herald, 24 Aug. 2026

Definition of backup

Verb

The 11-member board also reviews police policies, procedures and training, and advises BART leadership.

— Chase Hunter, Mercury News, 25 Aug. 2026
His other roles included advising basketball operations on NBA rules, CBA interpretation, league memoranda, draft matters, player health, immigration, roster construction, transaction execution and roster compliance.

— Gary Bedore, Kansas City Star, 24 Aug. 2026

Definition of advise

Browse Nearby Words

fillies

fill-in

fill in

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Cite this Entry

Style

“Fill-in.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/fill-in. Accessed 28 Aug. 2026.

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Synonyms of fill-in

noun

verb

Example Sentences

Browse Nearby Words

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