/ Dictionary / Index H high-keyed: Meaning and Definition of Find definitions for: high-keyed Pronunciation: (hī'kēd'), [key] — adj. very nervous or excitable; high-strung. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: high-keyed (Thesaurus) high key highland Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language