Otur, ill luck, bad luck.
Otvifvelaktig, undoubted, doubtless.
Otvungen, uncompelled, easy.
Otydlig, obscure, dark.
Otyglad, unrestrained, unchecked.
Otymplig, shapeless, uncouth.
Otålig, impatient.
Otäck, nasty, ugly.
Otänkbar, incredible, impossible.
Otät, leaky.