from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Contented to a fault; self-satisfied and unconcerned: He had become complacent after years of success.
- adj. Eager to please; complaisant.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Uncritically satisfied with oneself or one's achievements; smug.
- adj. Apathetic with regard to an apparent need or problem.
from the GNU version of the Collaborative International Dictionary of English
- adj. Self-satisfied; contented; kindly.
from The Century Dictionary and Cyclopedia
- Civil; kindly; giving pleasure. See complaisant (now generally used in this sense).
- Accompanied with or springing from a sense of quiet enjoyment; gratified; satisfied: as, a complacent look or smile.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. contented to a fault with oneself or one's actions
Latin complacēns, complacent-, present participle of complacēre, to please : com-, intensive pref.; see com- + placēre, to please; see plāk-1 in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin complacens ("very pleasing"), present participle of complacere ("to please at the same time, be very pleasing"), from com- ("together") + placere ("to please"); see please and compare complaisant. (Wiktionary)