Osnygg, dirty, nasty.
Oss, us.
Ost (öster), east; (en) cheese.
Ostadig, inconstant, unsteady.
Ostlig, east, easterly, eastern.
Ostraffad, unpunished.
Ostron, oyster.
Ostuderad, illiterate.
Ostyrig, ungovernable, wild.
Ostädad, disordered; unpolished.