overweening vs extravagant

overweening and extravagant both are adjectives.

Word	Noun	Adjective	Verb	Adverb
overweening	No	Yes	No	No
extravagant	No	Yes	No	No

As adjectives, overweening and extravagant are synonyms defined as:

overweening and extravagant: unrestrained, especially with regard to feelings

Other synonyms of overweening include excessive, exuberant.

overweening (adjective)	extravagant (adjective)
presumptuously arrogant	unrestrained, especially with regard to feelings
unrestrained, especially with regard to feelings	recklessly wasteful