\ ˈfil-ˌin How to pronounce fill-in (audio) \

Definition of fill-in

 (Entry 1 of 2)

: someone or something that fills in

fill in

filled in; filling in; fills 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

Verb 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 But the new insights into Antarctica sea ice may at least help fill in some of the uncertainties about carbon storage in the Southern Ocean. Chelsea Harvey, Scientific American, "Declining Antarctic Sea Ice Could Disrupt a Major Carbon Sink," 24 June 2020 What types of jobs do those temporary workers fill in the United States? Nick Miroff, Anchorage Daily News, "Trump’s new restrictions on foreign workers, explained," 23 June 2020 According to the survey data, the state would need to purchase about 200,000 laptops or other devices to fill in the gap – although the number is probably lower, as districts have likely increased their number of devices in the last year. Arika Herron, The Indianapolis Star, "If schools close again, a new grant will help them be better prepared for online learning," 23 June 2020 Many agencies have had to reduce subway and bus frequency, and microtransit could be used to fill in some of these service gaps, particularly at odd hours, Feigon said. Doug Johnson, Wired, "Microtransit Gives City Agencies a Lift During the Pandemic," 20 June 2020 Many agencies have had to reduce subway and bus frequency, and microtransit could be used to fill in some of these service gaps, particularly at odd hours, Feigon says. Doug Johnson/undark, Popular Science, "The pandemic has cities rethinking public transit," 17 June 2020 Volunteers will fill in the letters with street paint provided by the city. Anna Beahm |, al, "Black Lives Matter: Birmingham activists, volunteers make their mark," 17 June 2020 The player is left having to do too much work to fill in the blanks to make pivotal moments make some kind of logical sense, even from the characters’ own point of view. Kyle Orland, Ars Technica, "The Last of Us Part 2 review: A less confident, less focused sequel," 12 June 2020 The program is designed to not only help the business community recover from the impacts of COVID-19 as quickly as possible, but also fill in some of the gaps in the federal assistance programs. John Benson, cleveland, "Cuyahoga County awards nearly three dozen Lakewood small businesses pandemic-related grants," 5 June 2020

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

Time Traveler

The first known use of fill-in was in 1840

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Cite this Entry

“Fill-in.” Dictionary, Merriam-Webster, Accessed 6 Jul. 2020.

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How to pronounce fill in (audio)

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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Rhyming Dictionary: Words that rhyme with fill-in

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