Okunnig, ignorant.
Okunnighet, ignorance.
Okynne, naughtiness, mischief.
Okynnig, naughty, vicious, mischievous.
Okysk, unchaste, wanton, loose, lewd.
Okänd, unknown (to).
Olag, disorder, huddle.
Olaglig, illegal, illicit, unlawful.
Olidlig, unendurable.
Olik, unlike, dissimilar.