brainiac/ˈbɹeɪniæk/Listennoun1(sometimes derogatory) A very intelligent and usually studious, erudite person.Synonymsgeniuspedantsmart-asswiseguyAntonymsdufusdumb-assdumboidiotignoramusTranslate “brainiac” to another languageClick any language to open the translator with this word already filled in.SpanishEspañolFrenchFrançaisGermanDeutschChinese中文Japanese日本語Korean한국어ArabicالعربيةHindiहिन्दीPortuguesePortuguêsRussianРусскийItalianItalianoDutchNederlandsTurkishTürkçePolishPolskiVietnameseTiếng ViệtThaiไทยIndonesianBahasa IndonesiaBengaliবাংলাSwedishSvenskaGreekΕλληνικάShow all 252 languages