Definitions for: Overween

Webster (1913) Definition: O`ver*ween", v. t. [AS. oferw?nian. See Over, and
Ween.]
To think too highly or arrogantly; to regard one's own
thinking or conclusions too highly; hence, to egotistic,
arrogant, or rash, in opinion; to think conceitedly; to
presume.

They that overween, And at thy growing virtues fret
their spleen. --Milton.