1. A mild or indirect word or expression substituted for one considered to be too truthful.

2. A lie

3. A word used by politician when they don't know what "euphenism " means or how to pronounce it.
From Donald Trump speech at Carrier

'And then they played my statement, and I said, 'Carrier will never leave.' But that was a euphenism. I was talking about Carrier like all other companies from here on in because they made the decision a year and a half ago. "
by Breeasy December 3, 2016