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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.

She is a frequent fill-in for “CBS Mornings” co-host Gayle King.

From Los Angeles Times • Jan. 9, 2026

He will also serve as a lead correspondent for “48 Hours,” contribute to “60 Minutes,” and act as a fill-in anchor for CBS’s flagship broadcasts, she said.

From The Wall Street Journal • Dec. 9, 2025

Cummins may return for the second Test, and for now Scott Boland is a capable fill-in with an outstanding record in Australia.

From BBC • Nov. 5, 2025

She also was a frequent fill-in for Gayle King on the weekday morning program.

From Los Angeles Times • Oct. 29, 2025

This one was a last-minute fill-in for a famous violinist who’d gone down with the flu.

From "Goodbye Stranger" by Rebecca Stead