gidday

As interjections the difference between giddap and gidday

is that giddap is while gidday is (australia|new zealand|informal).

As an adjective giddy

is dizzy, feeling dizzy or unsteady and as if about to fall down.

As a verb giddy

is (obsolete|transitive) to make dizzy or unsteady.

As an interjection gidday is

(australia|new zealand|informal).

As a noun midday

is noon; twelve o'clock during the day.

As an interjection gidday is

(australia|new zealand|informal).