形容词

1. 自满的;沾沾自喜的;满不在乎的
A complacent person is very pleased with themselves or feels that they do not need to do anything about a situation, even though the situation may be uncertain or dangerous.

1. contented to a fault with oneself or one's actions

e.g. he had become complacent after years of success
his self-satisfied dignity

Synonym: self-satisfiedself-complacent