/ Dictionary / Index U unbridled: Meaning and Definition of Find definitions for: un•bri•dled Pronunciation: (un-brīd'ld), [key] — adj. not controlled or restrained: unbridled enthusiasm. not fitted with a bridle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unbridled (Thesaurus) unbridle unbroke Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language