euphemize

To utter one or more euphemisms; to speak euphemistically.

There seems to be some support here for the claim that the older group felt a greater need to euphemize in the two contexts in question.

To describe in euphemistic terms.

The pools in general are bedded with black mud, and creamed over with oily flakes which may proceed from the tar on the vessels' sides, and may also from "decomposing animal matter," as we euphemise it now-a-days.