WHILST Antonyms There are 3 antonyms of the word whilst. (opposite meanings)Did you mean?Definition of WHILSTAlso try opposite words for..whiledBest Opposite Words For WHILSTTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1while2during3whenadverbadv Alternatives for WHILE Words (9)idlelazelingerloungespellpatchpiecetillprovidingPhrases (1)hang aroundOpposite words for while Alternatives for WHEN Words (7)butimmediatelyoncewhilewheneverwherewhereasOpposite words for when