WHOMSO Antonyms There are 3 antonyms of the word whomso. (opposite meanings)Did you mean?Definition of WHOMSOBest Opposite Words For WHOMSOTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1whonounn2whatadverbadv3which Alternatives for WHAT Words (3)pardonsuchwotOpposite words for what