BIRDBRAIN Antonyms There are 6 antonyms of the word birdbrain. (opposite meanings)Did you mean?Definition of BIRDBRAINBest Opposite Words For BIRDBRAINTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb RankWordSave?Synonyms..UsageType1brainiacnoun, adjectiven, adj2brainyadjectiveadj3einsteinnoun, adjectiven, adj4geniusnoun, adjectiven, adj5intellectnounn6intellectualnoun, adjectiven, adj Alternatives for BRAINIAC Words (6)geniusbraineinsteinmastermindpedantwiseguyOpposite words for brainiac Alternatives for BRAINY Words (6)cleversmartbrightintellectualintelligentbrilliantPhrases (1)smart as a whipOpposite words for brainy Alternatives for EINSTEIN Words (9)brainiacgeniusmastermindexpertintellectualmaestroprodigysavantbrainPhrases (1)albert einsteinOpposite words for einstein Alternatives for GENIUS Words (35)brainiacmastermindvirtuosowizardbrainybrilliantclevercreativeexpertgiftedintellectualintelligentinventiveprodigysagesavantsmarttalentedvisionaryaceadeptbrainbrilliancechampioneinsteinflairhotshotmavenmavinsensationstarsuperstarwhizzwizwizardryOpposite words for genius Alternatives for INTELLECT Words (11)mindreasonunderstandingacumenbraincognitioncomprehensionintelligenceperceptionwitintellectualOpposite words for intellect Alternatives for INTELLECTUAL Words (19)cerebralacademicbrainyclevercognitiveeducatedeggheaderuditegeniusknowledgeablelearnedliteratescholarlysmartstudioushighbrowintellectnoeticrationalOpposite words for intellectual