Anodyne

Anodyne: Anodyne is a synonym for analgesia, both Latinate words meaning without pain, using the popular prefixes (a-, an-) as in atonal, asocial, antagonist, and androgynous.

The amnesia of comfort, soothing, anodyne, too seductive. They were
all too soon back to themselves.

A Book for Today: The Piano Teacher by Janice Y K Lee