Available Definitions:
1) a. - Full of presumption; presuming; overconfident or venturesome; audacious; rash; taking liberties unduly; arrogant; insolent; as, a presumptuous commander; presumptuous conduct.
2) a. - Founded on presumption; as, a presumptuous idea.
3) a. - Done with hold design, rash confidence, or in violation of known duty; willful.