/ Dictionary / Index F fanatical: Meaning and Definition of Find definitions for: fa•nat•i•cal Pronunciation: (fu-nat'i-kul), [key] — adj. motivated or characterized by an extreme, uncritical enthusiasm or zeal, as in religion or politics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fanatical (Thesaurus) fanatic fanaticism Related Content Daily Word Quiz: ablution Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language