G0119300 (gĭd′ē-ŭp′) also gid·dy·ap(-ăp′, -ŭp′) or gid·dap(gĭ-dăp′, -dŭp′)interj. Used to command a horse to go ahead or go at a faster pace.[Alteration of get up.]
giddap
(ɡɪˈdæp) or
giddy-up
interjan exclamation used to make a horse go faster[C20: colloquial form of get up]