痛恨 (つうこん)regretful; sorrowful; bitter

regretful; sorrowful; bitternouns which may take the genitive case particle 'no', adjectival nouns or quasi-adjectives (keiyodoshi)
contritionnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru

痛恨, its kanji, and other words that share them.Open this graph

Kanji in 痛恨

痛みいたみpain; ache
痛感つうかんfeeling keenly; fully realizing
腰痛ようつうlower back (or hip) pain; lumbago
苦痛くつうpain; agony
頭痛ずつうheadache
痛手いたでserious wound
痛いいたいpainful; sore
痛烈つうれつsevere; bitter
恨みうらみresentment; grudge
恨むうらむto bear a grudge against; to resent
遺恨いこんgrudge; ill will
かったいのかさ恨みかったいのかさうらみexcessive envy (of somebody in much the same position as oneself); envy of a leper's pockmarks
多恨たこんmany regrets; much sadness
多情多恨たじょうたこんsensibility; (having) many worries and regrets
宿恨しゅくこんold grudge; old score
怨恨えんこんenmity; grudge

See how 痛恨 connects to the rest of Japanese.