DIOESTRUAL Antonyms There are 2 antonyms of the word dioestrual. (opposite meanings)Did you mean?Definition of DIOESTRUALBest Opposite Words For DIOESTRUALTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1estrusnounn2estrualadjectiveadj Alternatives for ESTRUS Words (3)heatrutoestrusPhrases (1)mating seasonOpposite words for estrus