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Definitions

fill in

[fil-in] / ˈfɪlˌɪn /


VERB
act as substitute
Synonyms
Antonyms
WEAK
leave blank


fill-in


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

There are two things: One is something people have said for a long time the pool needs, that somebody has to fill in the spaces between the concrete slabs to make sure they don’t leak.

From Slate • Jun. 4, 2026

California has tried to keep people insured by using state tax money to fill in the gap for lower-income families.

From Los Angeles Times • Jun. 2, 2026

But for now, without the Dutch couple to fill in the gaps and officials unable to fully reconstruct their travels, many questions about how this outbreak started remain unanswered.

From BBC • May 10, 2026

Luke Kornet has a special vantage point on Wembanyama’s superpowers—and not only because San Antonio’s backup center has to fill in for him when he leaves the floor.

From The Wall Street Journal • May 2, 2026

“Fred looks enough like Duke to fill in for him. He’s even got the lightning bolt of white fur on his head.”

From "Dog Squad" by Chris Grabenstein




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