/ Dictionary / Index F freak-out: Meaning and Definition of Find definitions for: freak-out Pronunciation: (frēk'out"), [key] — n. Slang. an act or instance of freaking out. a person who freaks out. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: freak-out (Thesaurus) freak of nature freak show Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language