obliquely russian

• ко́со

  slantwise, obliquely, aslant, askew

• наискосо́к

  obliquely, slantwise

• вкось

  obliquely, slantwise, aslant

• и́скоса

  askance, sideways, out of the corner of one's eye

  askew, aslant, obliquely

• на́искось

  obliquely, slantwise, diagonally, at an angle

  diagonally opposite, diagonally across