Complacent \Com*pla"cent\, 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.

Source: Webster's Revised Unabridged Dictionary (1913)