/ Dictionary / Index M manic: Meaning and Definition of Find definitions for: man•ic Pronunciation: (man'ik), [key] — adj. pertaining to or affected by mania. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: manic (Thesaurus) maniacal manic-depressive Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language