What does 理屈 mean?
理屈 is a Japanese noun meaning “theory, reason” in English. It can also be translated as “(unreasonable) argument” depending on context. It is written as 理屈 in kanji, りくつ in hiragana, and rikutsu in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
彼はその理屈がわからないほどばかではない。
He is too wise not to see the reason.