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complacence (n.)

mid-15c., "pleasure, gratification," especially "self-satisfaction, delight in one's condition" (c. 1500), from Medieval Latin complacentia "satisfaction, pleasure," from Latin complacentem (nominative complacens), present participle of complacere "to be very pleasing," from com-, here probably an intensive prefix (see com-), + placere "to please" (see please). Sense of "disposition to please" (1620s) now goes with complaisance.