プログレッシブ和英中辞典(第4版)の解説
てきめん【×覿面】
薬を飲んだら歯痛がてきめんに治った
The medicine stopped my toothache immediately [instantly].
氷のうをしたら効果はてきめんだった
The ice bag had an instant [immediate] effect (on me).
年を取ると疲れがてきめんに出る
One tires quickly with age.／You tire easily when you get old.