口惜しい くちおしい Meanings い-adjective frustrated (over a failure, humiliation or injustice); annoyed; chagrined; (bitterly) disappointed; bitter; vexed; frustrating; annoying; regrettable See also: 悔しい (くやしい). Kanji 口 mouth. Read as くち. 惜 begrudge. Read as おしい. Jinuma: Japanese Dictionary · Word lists