1) Arrogant 2) Assured 3) Content 4) Contented 5) Smug 1) Complaisant 2) Content 3) Contented 4) Contented to a fault 5) Pleasant 6) Self-satisfied 
• (a.) Self-satisfied; contented; kindly; as, a complacent temper; a complacent smile.
Com·pla'cent adjective [ Latin complacens very pleasing, present participle of complacere ; com- + placere to please: confer French complaisant . See Please and confer Complaisant .] Self-satisfied; contented; kindly; as, a complacent temper; ...
[adj] - contented to a fault
self-satisfied adjective contented to a fault with oneself or one`s actions; `he had become complacent after years of success`; `his self-satisfied dignity`
pleased, esp. with oneself or one's merits, advantages, situation, etc., often without awareness of some potential danger or defect; self-satisfied: The voters are too complacent to change the government. · pleasant; complaisant.
[ASVAB glossary] contented to a fault with oneself or one's actions[SAT terms] contented to a fault with oneself or one's actions
contented to a fault with oneself or one's actions[SAT terms] contented to a fault with oneself or one's actions