/ Dictionary / Index U unloose: Meaning and Definition of Find definitions for: un•loose Pronunciation: (un-ls'), [key] — -loosed, -loos•ing. to loosen or relax (the grasp, hold, fingers, etc.). to let loose or set free; free from restraint. to undo or untie (a fastening, knot, etc.); unfasten. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unloose (Thesaurus) unlooked-for unloosen Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language