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See more synonyms for fill-in on Thesaurus.com
  1. a person or thing that fills in, as a substitute, replacement, or insertion: The company used a fill-in for workers on vacation.
  2. a brief, informative summary; a rundown.
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Origin of fill-in

First recorded in 1915–20; noun use of verb phrase fill in
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for fill-in

understudy, temporary, sub, surrogate, standby, alternate, double, backup, replacement, temp, stand-in

Examples from the Web for fill-in

Contemporary Examples of fill-in

Historical Examples of fill-in

  • The largest number of fill-in wefts occurs roughly at a point about a third up from the end.