Green’s Dictionary of Slang

wimpette n.

[wimp n.1 (1) + fem. sfx -ette]

an insignificant, cowardly female.

[US]‘Joe Bob Briggs’ Joe Bob Goes to the Drive-In 129: Racy Bregman is the kind of wimpette who says ‘ma’am’ and ‘excuse me’ and tries to make friends with the Black Muslim sisters.