tediously russian

• ску́чно

  boringly, tediously

• нудно

  tediously, boringly, monotonously

  it is boring, it is tedious, it is dreary

• трудоёмко

  labor-intensively, laboriously, with great effort, tediously

• долдо́нящий

  harping, droning, tediously repeating, insisting persistently

• долдонимый

  droned, monotonously repeated, tediously repeated

• резонёрствовавший

  moralizing, tediously reasoning, sermonizing