extravagant vs overweening

extravagant and overweening both are adjectives.

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

As adjectives, extravagant and overweening are synonyms defined as:

extravagant and overweening: unrestrained, especially with regard to feelings

Other synonyms of extravagant include excessive, exuberant.

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