Birdbrain 1 : a stupid person 2 : SCATTERBRAIN Synonyms cuckoo, ditz, featherbrain, featherhead, flibbertigibbet, nitwit, rattlebrain, scatterbrain, softhead Antonyms sobersides Example Her brothers a real birdbrain. those birdbrains who eagerly adopt every fad diet that comes along @LearnEnglish_English 8 views✫❁❀ U⃠.Z⃠.U⃠❀❁✫, 23:13