felicific

adj

1. (rare)Of, pertaining to, or producing pleasure or happiness.

   “Has conduct worth in and for itself, or only as its consequences are felicific as regards the social welfare?”

   “It is plain that for Jane Austen the settled habit of moral behavior was of far more importance than spontaneity of moral response, though that in turn was preferable to a calculated weighing of advantages, a point well illustrated when Elizabeth ironically advises Jane that if she is in doubt about whether she ought to accept Bingley she should decide the matter by striking a felicific balance.”

   “The Langham is proof of the felicific power of good architecture, the power to promote, both in its inhabitants and in passers-by, happiness.”