Using softer phrases for offensive or taboo terms (11)
I believe the answer is:
euphemistic
(Other definitions for euphemistic that I've seen before include "Using milder words for unpleasant terms" , "Using a mild term for something stronger" , "Using a mild term for an offensive one" , "Replacing unpleasant term with a milder one" , "Using a milder term for something taboo" .)