As a verb euphemise
is .
As a noun euphemist is
one who uses euphemisms.
euphemist
English
Noun
(
en noun)
One who uses euphemisms.
* 2002 , Hal Crowther, Cathedrals of Kudzu: A Personal Landscape of the South
- He was a man of dark moods and self-destructive impulses, subject to what euphemists call "nervous illness." He was never at any safe distance from despair.