Unspeak :: Unspeak (v. t.) To retract, as what has been spoken; to recant; to unsay..
Unspeakable :: Unspeakable (a.) Not speakable; incapable of being uttered or adequately described; inexpressible; unutterable; ineffable; as, unspeakable grief or rage..
Unspecialized :: Unspecialized (a.) Not specialized; specifically (Biol.), not adapted, or set apart, for any particular purpose or function; as, an unspecialized unicellular organism..
Unsped :: Unsped (a.) Not performed; not dispatched.
Unspell :: Unspell (v. t.) To break the power of (a spell); to release (a person) from the influence of a spell; to disenchant.