Presumptuous

Part of speech: adjective (a.)

1. Full of presumption; presuming; overconfident or venturesome; audacious; rash; taking liberties unduly; arrogant; insolent; as, a presumptuous commander; presumptuous conduct. A class of presumptuous men, whom age has not made cautious, nor adversity wise. Buckminster.

2. Founded on presumption; as, a presumptuous idea. "False, presumptuous hope." Milton.

3. Done with hold design, rash confidence, or in violation of known duty; willful. "Keep back the servant also from presumptuous sins." Ps. xix. 13.

Synonyms: Overconfident; foolhardy; rash; presuming; forward; arrogant; insolent.