unsafe, a. [insecure], [risky], [perilous], [dangerous], [hazardous], imperiled, [precarious].
unsafety, n. [insecurity], [danger], [risk], [peril], [hazard], [jeopardy].
unsalable, a. invendible, unmarketable.
unsatisfactory, a. disappointing, [insufficient].
unsatisfiable, a. [insatiable], insatiate.
unsavory, a. [offensive], [rank], [unpleasant]; insipid, savorless, [mawkish], unpalatable, [vapid].
unsay, v. [recall], [retract], [recant].
unsaying, n. [recantation], [retraction].
unscrupulous, a. [unprincipled], unconscientious, [dishonest], [dishonorable], [knavish].
unsearchable, a. [inscrutable].