/ Dictionary / Index C cool-headed: Meaning and Definition of Find definitions for: cool-head•ed Pronunciation: (kl'hed'id), [key] — adj. not easily excited; calm. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: cool-headed (Thesaurus) Cooley's anemia Coolidge Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language