: someone or something that fills in
She performed well as the emergency fill-in.
filled in; filling in; fills in
1
: to enrich (something, such as a design) with detail
2
: to give necessary or recently acquired information to
I'll fill you in
: to fill a vacancy usually temporarily
Interns filled in for regular staffers.
Examples of fill-in in a Sentence
Noun
I'm just a fill-in, so I have no idea where office supplies are kept
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
John Wawrow, Hartford Courant, 12 June 2026
In 2022, the civil grand jury found evidence of mutual distrust between Cupertino City Council members and city staff, which led to a long line of resignations and fill-ins in the city manager’s position.
—Nollyanne Delacruz, Mercury News, 11 June 2026
Andrew Knoll, Daily News, 11 June 2026
Hospitals and schools could help fill in as well.
—Luis Melecio-Zambrano, Mercury News, 10 June 2026
See All Example Sentences for fill-in
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Noun
Injury fill-in Jovo Lukic headed in a corner kick in the 21st minute for Bosnia-Herzegovina, which is making its second World Cup appearance after failing to advance out of group play in 2014.
—John Wawrow, Hartford Courant, 12 June 2026
In 2022, the civil grand jury found evidence of mutual distrust between Cupertino City Council members and city staff, which led to a long line of resignations and fill-ins in the city manager’s position.
—Nollyanne Delacruz, Mercury News, 11 June 2026
Verb
Doughty’s longtime teammate, Anže Kopitar, retired this spring and left a huge void to fill in the middle.
—Andrew Knoll, Daily News, 11 June 2026
Hospitals and schools could help fill in as well.
—Luis Melecio-Zambrano, Mercury News, 10 June 2026
See All Example Sentences for fill-in
Cite this Entry
“Fill-in.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fill-in. Accessed 16 Jun. 2026.
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