unmentionable
1.Some of the crimes committed during the war are unmentionable.
2.Perhaps he mentioned my cardie because my work was unmentionable.
3.A green itchy material that collects between layers of clothing, especially in unmentionable places.
4.In every language there seem to be certain "unmentionable"-words of such strong...connotations that they cannot be used in polite discourse.
5.Now the publishers of the bible of blue-blooded behavior are straying into previously unmentionable areas of the life of a modern girl -- with a new book offering guidance on adultery, toplessness and celebrity gossip.
