| complacent | complaisant |
| Definition:
(1) The smugly self-satisfied are complacent, whereas (2) those who are willing to please are complaisant. |
| Etymology:
(1) The word complacent derives from the Latin complacere, be very pleasing. (2) The word complaisant derives from the French complaisant, but it also ultimately derives from the Latin complacere. |