When a 'y' is added, it becomes 'impy', which means that one would look, or act particulary bad, or like a monster.
Impy is often used as a codename between friends to describe or discuss another person undetected and without their knowledge.
2. That teacher is an imp.
3. You look very impy today.
4. You are acting very impy today.
5. isn't Impy so wierd?
imp, is also a word used to describe something that works as an aphrodisiac
1- omg, that poor man an his impy body cant reach the cookie jar
2- man, its too bad about that car. it was really impy, the missus loved it.
imp, missus, aphrodisiac, high king
Do you see that hard-lookin' guy over there, he's an IMP from Phi Eta Psi Fraternity.
The IMPs and the Emeralds of Phi Eta Psi Fraternity call themselves "The Family."