Synonyms and Antonyms of fill in
1 to give information to <my friend quickly filled me in on the portion of the movie that I had missed> Synonyms acquaint, advise, apprise, brief, catch up, clear, clue (in), familiarize, enlighten, hip, inform, instruct, tell, verse, wise (up)Related Words advertise, alert, notify; announce (to), disclose (to); assure, certify, convince, reassure, warrant; educate, lecture, school, teach, tutor; disabuse, disenchant, disillusion, undeceiveNear Antonyms misinform, mislead
2 to serve as a replacement usually for a time only <she's only filling in while the regular secretary is on vacation> Synonyms cover, pinch-hit, stand in, step in, sub, substitute, take overRelated Words understudy; relieve, spell; double (as)
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