しまった (translations)→ eep jeez no shit tense
顔をゆがめる (translations)→ grimace wince
苦しい (translations)→ agonized agonizing bad choked hard hurt ordeal pain painful painfully sick sorrow stciky suffer suffering thorny tight uncomfortable unpleasant worry
苦しみ (translations)→ care commiseration heartache misery misfortune trauma travail
苦痛 (translations)→ penance stab taste
苦悶 (translations)→ angst discomfort torture