\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

Generally, artists will tattoo the outline first, and then continue by filling in and adding detail. Hannah Dylan Pasternak, SELF, "8 Things You Should Definitely Know Before You Get Your First Tattoo," 31 Oct. 2018 Like many shredded memory foam pillows, the fill in each can be adjusted to suit a wide range of different sleepers. Don Melanson, Popular Mechanics, "How To Find the Perfect Pillow and Finally Get a Good Night's Sleep," 3 Oct. 2018 Up next, Mike Emanuel filling in for -- END Content and Programming Copyright 2018 Fox News Network, LLC. Fox News, "What role has Rosenstein played in decision to declassify?," 21 Sep. 2018 Step 2: To get 16-year-old Julia's look, fill in your eyes and brows with a black eyeshadow. Kelsey Stiegman, Seventeen, "5 Snapchat Filter Halloween Costumes You Should Rock IRL," 8 Aug. 2018 Mom's at the wheel, grandma's in the passenger seat, and four children, including a boy who uses a wheelchair, fill in the two rows in the back. Dan Simmons,, "2 years after Philando Castile's death, programs aim to transform relations between police, residents," 8 July 2018 And unlike last year's ceremonies, where a couple clear frontrunners had already emerged by this point in Kendrick Lamar and Ed Sheeran, the big categories seem fairly open in 2018 -- especially since there's now eight slots to fill in each. Andrew Unterberger, Billboard, "Eight Artists Who Could Benefit From the 2019 Grammys' New Expanded Major Categories," 27 June 2018 Jurickson Profar, who filled in for Andrus at shorstsop, was in Monday's startling lineup at second base in place of Rougned Odor. Stefan Stevenson, star-telegram, "Rangers Elvis Andrus returns, Jurickson Profar starts in place of Rougned Odor," 18 June 2018 Is there any connecting Batman to—fill in the blank? Stephen Metcalf, The New Yorker, "How Superheroes Made Movie Stars Expendable," 19 May 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

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a private place of worship

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