dispassionate russian

• беспристра́стный

  impartial, unbiased, dispassionate, even-handed

• бесстра́стный

  impassive, unemotional, passionless

  dispassionate, detached, objective

• бесстра́стно

  impassively, dispassionately, unfeelingly, coldly

• отрешенно

  detachedly, aloofly, dispassionately, abstractedly