stupidly russian

• глу́по

  foolishly, stupidly

  it is stupid, it is silly

• ту́по

  dully, stupidly, with a stupid air

• наглупи́ть

  to act stupidly, to make a blunder, to do something foolish

• тупя́щий

  blunting, dulling

  slow-witted, dull-witted, acting stupidly

• идио́тски

  idiotically, in an idiotic way, stupidly

Examples

• Почему Том всегда так по-дурацки улыба́ется, когда меня ви́дит? - "Ты что, ещё не зна́ешь? Он без ума́ в тебя влюблён!"

  “Why does Tom always grin so stupidly when he sees me?” - “You still don't know? He's madly in love with you!”

• Он бездарно потратил все свои деньги.

  He squandered all his money stupidly.