/ Dictionary / Index G giddyap: Meaning and Definition of Find definitions for: gid•dy•ap Pronunciation: (gid"ē-ap', -up'), [key] — interj. (used as a command to a horse to speed up). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. giddy giddy-headed Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language