How to say stupid in Japanese

間抜け^☆【まぬけmanuke】 Inflection: adjectival noun / noun:
stupid; foolish; idiotic

Example Sentences

こんなkonna 馬鹿baka なna ことkoto はha 言っi たta ことkoto がga 無いnai。: I've never said such a stupid thing.
バカBAKA なna 質問shitsumon がga あるaru んn だda。: I have a stupid question.
馬鹿baka みたいmitai！: This is silly!
両親ryoushin がga くだらないkudaranai ことkoto でde 言い争っiiaraso てte いi てte、とてもtotemo いらいらiraira するsuru よyo。: My parents keep arguing about stupid things. It's so annoying!
コンピューターKONPYUUTAA のno おかげokage でde 人間ningen はha 馬鹿baka にni なるnaru。: Computers make people stupid.

© Based on JMdict, KANJIDIC2, and JMnedict, property of the Electronic Dictionary Research and Development Group, used in conformance with the Group's licence. Example sentences from the Tatoeba project (CC BY 2.0). Kanji stroke order data from the KanjiVG project by Ulrich Apel (CC BY-SA 3.0). See comprehensive list of data sources for more info.