What is another word for

complacent

complacent as in contented to a fault with oneself or one's actions
  • "he had become complacent after years of success"
  • "his self-satisfied dignity"

Synonyms

  • self-satisfiedmarked by excessive complacency or self-satisfaction; contented to a fault with oneself or one's actions
  • self-complacentcontented to a fault with oneself or one's actions