せんもん 専門バカ LinksSentence search for 専門バカSentence search for せんもんバカSentence search for 専門馬鹿Sentence search for せんもんばかKanji details for 専 and 門Edit in JMdict Noun1. person who is ignorant outside his fieldOther forms専門馬鹿 【せんもんばか】 Discussions Log in to talk about this word.