りかいくる 理解に苦しむ Show inflections LinksSentence search for 理解に苦しむSentence search for りかいにくるしむKanji details for 理, 解 and 苦Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'mu' ending1. to be unable to understand; to baffle one's understanding; to be beyond one's comprehension Discussions Log in to talk about this word.