devilishly russian

• черто́вски

  devilishly

• дья́вольски

  awfully, terribly, fearfully, confoundedly

  devilishly, diabolically, fiendishly

Examples

• Зада́ние бы́ло дьявольски тяжёлым.

  The assignment was devilishly difficult.

• Э́то дьявольски сложно.

  This is devilishly difficult.

• Сегодня дьявольски холодно на улице

  It’s devilishly cold outside today.