GIANTISM Antonyms There are 2 antonyms of the word giantism. (opposite meanings)Did you mean?Definition of GIANTISMBest Opposite Words For GIANTISMTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1dwarfismnounn2smallnessnounn Alternatives for DWARFISM Words (1)nanismOpposite words for dwarfism Alternatives for SMALLNESS Words (5)littlenessdiminutivenessminutenesstenuitypettinessOpposite words for smallness