/ Dictionary / Index M mood-altering: Meaning and Definition of Find definitions for: mood-al•ter•ing Pronunciation: (md'ôl"tur-ing), [key] — adj. (esp. of drugs) capable of changing one's emotional state. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mood mood music Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language