a. 放肆的, 冒昧的, 傲慢的

[ adj ]
excessively forward
<adj.all>
an assumptive personon a subject like this it would be too assuming for me to decide
the duchess would not put up with presumptuous servants

Presumptuous \Pre*sump"tu*ous\ (?; 135), a. [L. praesumptuosus:
cf. F. pr['e]somptueux, 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.