Pre*sump"tu*ous (?; 135), a. [L. praesumptuosus: cf. F. pr'esomptueux, OF. also presumptuous. See Presumption.]
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.
Syn. -- Overconfident; foolhardy; rash; presuming; forward; arrogant; insolent.
© Webster 1913.