Webster’s Revised Unabridged Dictionary · 1913
Complacent
Com·pla′cent (kŏm·plā′sent), a. [L. complacens very pleasing, p. pr. of complacere; com- + placere to please: cf. F. complaisant. See Please and cf. Complaisant.] Self-satisfied; contented; kindly; as, a complacent temper; a complacent smile.
They look up with a sort of complacent awe . . . to kings. Burke.