The story
- Latin · borrowed fromcomplacēns“very pleasing”
- English todaycomplacent
Borrowed from Latin complacēns (“very pleasing”), present participle of complacēre (“to please at the same time, be very pleasing”), from com- (“together”) + placēre (“to please”); see please and compare complaisant.
Etymology from Wiktionary, CC BY-SA 4.0.