Meaning : Unrestrained, especially with regard to feelings.
Example :
Extravagant praise.
Exuberant compliments.
Overweening ambition.
Overweening greed.
Synonyms : excessive, extravagant, exuberant
Meaning : Presumptuously arrogant.
Example :
Had a witty but overweening manner.
No idea how overweening he would be.
Getting a little uppity and needed to be slapped down.
Synonyms : uppity