to make a mistake, to err / to become in a bad mood, to become troubled or despondent / to be unreasonable or irregular / to mistake one thing for another / to choose in the wrong direction

answer

quiz where the competitor who presses the buzzer first answers

(colloquial) current boyfriend

everything

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

multiple answers

(rare, mainly used in educational field) (of mathematical problem) solving

Kyūjitai form of 誤訳