Word of the Week

euphemism

noun
\YOO-fuh-miz-um\

Definition
: the substitution of an agreeable or inoffensive expression for one that may offend or suggest something unpleasant; also : the expression so substituted

Examples
Aunt Helen would never say that someone had "died"; she preferred to communicate the unpleasant news with euphemisms like "passed on."

taken from:

http://www.merriam-webster.com/word-of-the-day/2015/08/07/