I am cursed blessed with a non-native English speaking partner.
Although he speaks fluent English, one of the (many) wonderful things he does every so often is come up with a new word. Ninety-nine percent of the time it should exist, if you follow the rules of grammar, but nobody has thought of it yet.
The other day he came with another new one: plumpy. What a great word. Plumpy. I love it.