CESTRUM NOCTURNUM Antonyms There are 2 antonyms of the phrase cestrum nocturnum. (opposite meanings)Did you mean?Definition of CESTRUM NOCTURNUMBest Opposite Words For CESTRUM NOCTURNUMTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1daytimenounn2diurnaladjectiveadj Alternatives for DAYTIME Words (5)daydaylightdaytimediurnalsunlightOpposite words for daytime Alternatives for DIURNAL Words (1)circadianOpposite words for diurnal