complacency

noun

Etymology: Late Middle English complacence, from Late Latin complacentia. Compare French complaisance.

1. A feeling of contented self-satisfaction, especially when unaware of upcoming trouble.

   “Others proclaim the infirmities of a great man with satisfaction and complacency, if they discover none of the like in themselves.”

   “[…] looking at Mr. George Osborne's pale interesting countenance, and those beautiful black, curling, shining whiskers, which the young gentleman himself regarded with no ordinary complacency, she thought in her little heart that in His Majesty's army, or in the wide world, there never was such a face or such a hero.”

2. An instance of self-satisfaction.
3. Passivity as a result of contentment with the current situation.