The neurophysiological experience of satisfaction and being at ease in one's situation, body, and/or mind.
happiness in one's situation; satisfaction
The state or degree of being contented or satisfied.
Emotional pain on account of something done or experienced in the past, with a wish that it had been different; a looking back with dissatisfaction or with longing.
The amount of avoidable loss that results from choosing the wrong action.
To feel sorry about (a thing that has or has not happened), afterthink: to wish that a thing had not happened, that something else had happened instead.
To feel sorry about (any thing).