Open English Wordnet
Adjectives
(s)excessive, extravagant, exuberant, overweeningunrestrained, especially with regard to feelings“extravagant praise”, “exuberant compliments”, “overweening ambition”, “overweening greed”
(s)overweening, uppitypresumptuously 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)