gratis russian

• беспла́тно

  free of charge, gratis

• да́ром

  for free, for nothing, gratis

  in vain, for nothing, to no purpose

• задарма́

  for free, for nothing, gratis

  for a song, for next to nothing, dirt cheap

• дармовой

  free, gratis, for nothing

• дармовщи́на

  freebie, something for nothing, gratis