口惜しい

(1)feeling or expressing regret or sorrow or a sense of loss over something done or undone; "felt regretful over his vanished youth"; "regretful over mistakes she had made"; "he felt bad about breaking the vase"

(2)何かをした、あるいはしなかったことについて後悔、悲しみ、あるいは喪失感を感じること、あるいは表すさま

(3)deserving regret; "regrettable remarks"; "it's regrettable that she didn't go to college"; "it's too bad he had no feeling himself for church"

(4)後悔に値するさま

(1)