self-satisfied vs complacent

self-satisfied and complacent both are adjectives.

Word	Noun	Adjective	Verb	Adverb
self-satisfied	No	Yes	No	No
complacent	No	Yes	No	No

As adjectives, self-satisfied and complacent are synonyms defined as:

self-satisfied and complacent: contented to a fault with oneself or one's actions

Other synonyms of self-satisfied include self-complacent.

self-satisfied (adjective)	complacent (adjective)
contented to a fault with oneself or one's actions	contented to a fault with oneself or one's actions
marked by excessive complacency or self-satisfaction