• 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.