bumptiously


bump·tious

B0548800 (bŭmp′shəs)adj. Crudely or loudly assertive; pushy.
[Perhaps blend of bump and presumptuous.]
bump′tious·ly adv.bump′tious·ness n.
Thesaurus
Adv.1.bumptiously - in a bumptious manner; "he behaved rather bumptiously and offended the hostess"