overweening

Unduly confident; (sometimes also) arrogant.

She wins one modeling contest in Montana and suddenly she’s overweening.

Heere's an ouer-weening rogue.

Exaggerated, excessive.

The idea that an overweening federal government is a threat to both freedom and equality (not to mention prosperity) goes back to Jefferson, James Madison, Patrick Henry and some other fairly respectable personages.

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

Let us suppresse this over-weening [translating cuider], the first foundation of the tyrannie of the wicked spirit[…].