unkind, a. [cruel], [harsh], austere, [rigorous], incompassionate, inclement, [brutal].
unkindness, n. cruelty, [brutality], [severity], incompassion, [incivility], [disfavor].
unknowable, a. incognizable, incognoscible, unascertainable, unintelligible, [incomprehensible].
unknowingly, adv. [unwittingly], [ignorantly], unconsciously, inadvertently.
unknown, a. [obscure], inglorious, unrenowned, [nameless], undistinguished; unascertained, unexplored, unapprehended; anonymous.
unknown person. stranger, ignote.
unladylike, a. hoidenish, [pert], ill-bred.
unlawful, a. [illegal], [illicit], [contraband], [illegitimate], unlicensed.
unleavened, a. azymous.
unleavened bread. azym.