adj 1 irritating and irritable. Very similar to “stroppy.” 2 cold. In a similar sort of a way to the word “chilly.” 3 fast. Particularly in relation to cars. You might test-drive a car and relate back to your chums how nippy it was. Of course, if the salesman was a bit nippy you’d probably not drive it at all, or if it was a convertible and it was nippy outside.