Giddyap is defined as a way of writing giddy up, which is an encouragement to move forward or to go faster.
When you want a horse to start running, this is an example of a time when you might urge the horse to giddyap.
- start moving
- go faster
Origin of giddyapaltered from get up
Also gid·dy·up′ or gid·dap′
- Giddy up.