OVERWEENING

overweening, uppity

(adjective) presumptuously arrogant; “had a witty but overweening manner”; “no idea how overweening he would be”- S.V.Benet; “getting a little uppity and needed to be slapped down”- NY Times

excessive, extravagant, exuberant, overweening

(adjective) unrestrained, especially with regard to feelings; “extravagant praise”; “exuberant compliments”; “overweening ambition”; “overweening greed”

Source: WordNet® 3.1

Etymology 1

Adjective

overweening (comparative more overweening, superlative most overweening)

Unduly confident; arrogant

Synonyms: presumptuous, conceited

Exaggerated, excessive.

Etymology 2

Noun

overweening (countable and uncountable, plural overweenings)

(now rare) An excessively high opinion of oneself or one’s abilities; presumption, arrogance.

Etymology 3

Verb

overweening

present participle of overween

Source: Wiktionary

O`ver*ween"ing, a.

Definition: Unduly confident; arrogant; presumptuous; conceited.

– O`ver*ween"ingly, adv. Milton.

– O`ver*ween"ing*ness, n. Here's an overweening rogue. Shak.

O`ver*ween"ing, n.

Definition: Conceit; arrogance. Milton.

OVERWEEN

O`ver*ween", v. t. Etym: [AS. oferw. See Over, and Ween.]

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition