むずかしい の訳語→ advanced bad critically heavy important nervous poorly problematic quizzical tight tough tricky
苦しい の訳語→ agonized agonizing agony choked hard hurt ordeal pain painful painfully sick sorrow stciky suffer suffering uncomfortable unpleasant worry
心を痛める の訳語→ annoy fear nurse torture
痛い の訳語→ sore threat vulnerable
複雑な の訳語→ byzantine complex complexity complicated convoluted difficult elaborate intricate involved labyrinthine mixed tortuous
厄介な の訳語→ delicate exhausting gruelling irksome onerous puzzling uphill