: 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
Scott Fowler, Charlotte Observer, 4 Feb. 2026
Kelce pulled out of the Pro Bowl and Buffalo Bills was announced as the fill-in.
—Chantz Martin, FOXNews.com, 1 Feb. 2026
Lindsay Schnell, New York Times, 9 Feb. 2026
That drive ended with Kittle making a touchdown catch near the front right pylon after beating the coverage of safety Ty Okada, who was filling in for injured rookie Nick Emmanwori.
—Cam Inman, Mercury News, 8 Feb. 2026
See All Example Sentences for fill-in
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Noun
Brown, 40, works as a sports reporter for WSOC-Channel 9 in Charlotte, covering all of the local sports teams and occasionally serving as a fill-in anchor on the news desk.
—Scott Fowler, Charlotte Observer, 4 Feb. 2026
Kelce pulled out of the Pro Bowl and Buffalo Bills was announced as the fill-in.
—Chantz Martin, FOXNews.com, 1 Feb. 2026
Verb
Bone-wise, everything just kind of fills in.
—Lindsay Schnell, New York Times, 9 Feb. 2026
That drive ended with Kittle making a touchdown catch near the front right pylon after beating the coverage of safety Ty Okada, who was filling in for injured rookie Nick Emmanwori.
—Cam Inman, Mercury News, 8 Feb. 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 10 Feb. 2026.
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