unctuous vs fulsome

unctuous and fulsome both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unctuous	No	Yes	No	No
fulsome	No	Yes	No	No

As adjectives, unctuous and fulsome are synonyms defined as:

unctuous and fulsome: unpleasantly and excessively suave or ingratiating in manner or speech

Other synonyms of unctuous include buttery, oily, oleaginous, smarmy, soapy.

unctuous (adjective)	fulsome (adjective)
unpleasantly and excessively suave or ingratiating in manner or speech	unpleasantly and excessively suave or ingratiating in manner or speech