NIGHTTIME Antonyms There are 3 antonyms of the word nighttime. (opposite meanings)Did you mean?Definition of NIGHTTIMESynonyms of NIGHTTIMEAlso try opposite words for..nightnightlyBest Opposite Words For NIGHTTIMETop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1daytimenounn2daynounn3diurnaladjectiveadj Alternatives for DAYTIME Words (5)daydaylightdaytimediurnalsunlightOpposite words for daytime Alternatives for DAY Words (4)daylightepocheradaytimePhrases (8)24-hour intervalclarence dayclarence shepard day jr.mean solar daysidereal daysolar daytwenty-four hour periodtwenty-four hoursOpposite words for day Alternatives for DIURNAL Words (1)circadianOpposite words for diurnal