/ Dictionary / Index C control freak: Meaning and Definition of Find definitions for: control' freak" Pronunciation: [key] a person having a strong need to control his or her surroundings. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. control experiment control group Related Content Daily Word Quiz: languid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language