excessive vs overweening

excessive and overweening both are adjectives.

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

As adjectives, excessive and overweening are synonyms defined as:

excessive and overweening: unrestrained, especially with regard to feelings

Other synonyms of excessive include extravagant, exuberant.

excessive (adjective)	overweening (adjective)
beyond normal limits	presumptuously arrogant
unrestrained, especially with regard to feelings	unrestrained, especially with regard to feelings