giddap interjection & verb. ['gɪdap, gɪ'dap] colloq. Also giddup [-ʌp], giddy-up ['gɪdɪʌp, gɪdɪ'ʌp]. E20.
[Repr. a pronunc. of get up.]
A. interjection. A command to a horse etc.: go on!, go faster! E20.
b. verb. Infl. -p-, -pp-.
1. verb intrans. Of a horse etc.: go on, go faster. M20.

2. verb trans. Urge (a horse etc.) to go on or to go faster. M20.

[TahlilGaran] English Dictionary ▲