/ Dictionary / Index U unaltered: Meaning and Definition of Find definitions for: un•al•tered Pronunciation: (un-ôl'turd), [key] — adj. not altered, changed, or modified: We approved the unaltered designs. (of an animal) not neutered. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unaltered (Thesaurus) unalterable unambivalent Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language