はいり 背理 LinksSentence search for 背理Sentence search for はいりSentence search for 悖理Kanji details for 背 and 理Edit in JMdict Noun, Suru verb, Intransitive verb1. absurdity; irrationalityOther forms悖理 【はいり】Notes悖理: Rarely-used kanji form. Discussions Log in to talk about this word.