/ Dictionary / Index F fastidious: Meaning and Definition of Find definitions for: fas•tid•i•ous Pronunciation: (fa-stid'ē-us, fu-), [key] — adj. excessively particular, critical, or demanding; hard to please: a fastidious eater. requiring or characterized by excessive care or delicacy; painstaking. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fastidious (Thesaurus) fast ice fastigiate Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language