おおぐちあ 大口を開ける Show inflections LinksSentence search for 大口を開けるSentence search for おおぐちをあけるKanji details for 大, 口 and 開Edit in JMdict Expressions (phrases, clauses, etc.), Ichidan verb1. to gape; to open one's mouth wide Discussions Log in to talk about this word.