\ 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

Though the ditches were filled in during subsequent centuries, deep trenches remain beneath the surface of the ground. Brigit Katz, Smithsonian, "A Heat Wave is Revealing Centuries-Old Sites in Wales," 11 July 2018 Most of the trenches that zig zagged throughout this landscape were filled in and plowed over after the war. Nick Stockton, WIRED, "Laser-Shooting Planes Uncover the Horror and Humanity of World War I," 9 July 2018 But Tesla’s website says a Model 3 reservation placed today will be filled in approximately six to nine months. Charley Grant, WSJ, "Tesla’s Big Number Doesn’t Solve Its Problems," 2 July 2018 In the broader category of transportation and warehousing, which also includes trucking and other industries as well as delivery workers, more jobs were posted than were filled in April. Author: Ann D'innocenzio, David Koenigap, Anchorage Daily News, "Faster delivery of nearly everything is the next big thing," 1 July 2018 There’s a lot of vineyard space between Virginia and California, and thankfully some of it has been filled in since the early days of the republic. Michael Austin,, "For the Fourth, drink American: Syrah, pinot, grenache and a vineyard full of other U.S. wines," 28 June 2018 All of them are filled in with cheap particle board painted a conspicuous white. New York Times, "What to See in New York Art Galleries This Week," 27 June 2018 McConnell said that the vacancy should not be filled in an election year and that the nominee should be up to the next president. William Cummings, USA TODAY, "Chris Matthews: 'Hell to pay' if Democrats don't block Trump's Supreme Court pick," 27 June 2018 Sand bags have been filled in Montgomery and the Community Development team along with public works officials delivered them to South Moon Barbecue, a restaurant that is usually the first to experience flooding in the village. Judy Pochel, Aurora Beacon-News, "Fox River rises to 'minor' flood level in Montgomery," 22 June 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 magnificent or impressive array

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