Regret
Regretful, Contrition, Remorse
noun, な adjective, の adjective
つうこん
痛恨 (つうこん) Regret, Regretful, Contrition, Remorse
後悔 (こうかい) Regret, Repentance
哀悼 (あいとう) Condolence, Regret, Sympathy, Lament
He Regrets fighting two つう condors こん at once.
He Regrets not having worn two つう condoms こん