\ ˈfil-ˌin \

Definition of fill-in

 (Entry 1 of 2)

: someone or something that fills in

fill in


Definition of fill in (Entry 2 of 2)

transitive verb

1 : to enrich (something, such as a design) with detail
2 : to give necessary or recently acquired information to I'll fill you in

intransitive verb

: to fill a vacancy usually temporarily interns filled in for regular staffers

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Examples of fill-in in a Sentence


my friend quickly filled me in on the portion of the movie that I had missed she's only filling in while the regular secretary is on vacation

Recent Examples on the Web: Verb

Carey also said the union wants American to reduce its practice of shifting on-duty pilots to fill in for others who call in sick, can’t legally handle a flight because of crew-rest requirements, or other reasons. David Koenig, The Seattle Times, "Pilot union says it wants to help reduce delays on American," 19 Nov. 2018 Childish Gambino took the stage earlier than his original start time to fill in for Smith. Mariah Haas, Fox News, "Sam Smith pulls out of iHeartRadio Music Festival 'due to unforeseen circumstances': 'I am so so sorry'," 22 Sep. 2018 Enough equipment was sent to the blaze to activate a plan for Montgomery County fire fighters to fill in at at least on firehouse in the District. Martin Weil, Washington Post, "Fire damages two stores in heart of Georgetown," 26 June 2018 The best power forwards in the league – such as Anthony Davis, LaMarcus Aldridge and Draymond Green – also have the ability to fill in at center and are versatile. Jason Jones, sacbee, "Kings' best draft fits: Who could be the answer at power forward? Or is he here already? | The Sacramento Bee," 22 May 2018 The 2018 projected starting lineup across the offensive front would have had Jackson in one of the guard spots, but the coaching staff moved Jordan Johnson, the Knights’ regular center, to fill in at guard during the spring game. Chris Hays,, "UCF starting OG Sam Jackson out indefinitely due to torn ACL," 2 May 2018 Graham Glasgow, who started most of last season at left guard, also can play center, and filled in at that position in both 2016-17 when Travis Swanson was injured. Dave Birkett, Detroit Free Press, "Frank Ragnow 'pretty surprised' Detroit Lions were interested," 27 Apr. 2018 Joseph Kelly has been the Cowboys’ top singles player this year while second-team all-Ohio doubles players from a season ago, George Arenas and Kyle Demers, have tried filled in at second and third singles this seasons. John Snodgrass,, "GCTCA Coaches Classic: Mason-Sycamore rivalry headlines star-studded Flight A," 24 Apr. 2018 And after snapping to Jackson during their pro day, maybe Christian can even fill in at center in a pinch. Lorenzo Reyes, USA TODAY, "NFL draft 2018 offensive line rankings: Notre Dame's Quenton Nelson, Mike McGlinchey head class," 20 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fill-in.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of fill-in


1917, in the meaning defined above


1840, in the meaning defined at transitive sense 1

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Time Traveler for fill-in

The first known use of fill-in was in 1840

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More Definitions for fill-in



English Language Learners Definition of fill-in

: someone who takes the place of another person who is away for a short time : someone who fills in for someone else

More from Merriam-Webster on fill-in

Rhyming Dictionary: Words that rhyme with fill-in

Thesaurus: All synonyms and antonyms for fill-in

Comments on fill-in

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marked by shyness and lack of polish

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