adj.
- Contented to a fault; self-satisfied and unconcerned: He had become complacent after years of success.
- Eager to please; complaisant.
[Latin complacēns, complacent-, present participle of complacēre, to please : com-, intensive pref.; see com- + placēre, to please.]
complacently com·pla'cent·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.