unwarrantable, a. [unjustifiable], indefensible.
unwavering, a. [steadfast], [resolute].
unwearied, a. [indefatigable].
unweighable, a. imponderable.
unwholesome, a. baneful, insalubrious. See unhealthy.
unwieldy, a. [ponderous], [cumbersome], [clumsy].
unwilling, a. [reluctant], [indisposed], loath, disinclined, [averse].
unwind, v. disentangle, [unravel].
unwise, a. imprudent, injudicious, inexpedient, [indiscreet].
unwittingly, adv. [unknowingly], undesignedly, inadvertently.