Any
object or situation that is intensely disliked as a whole.
There is a subtle difference between using "hated" in this
way, and in the traditional use "it is hated (by many)". In this
case, "Hated" is used like the word "Hateful".
It's often used by itself, or as a one-word reply.
"I saw a cockroach run up the
wall! Hated."
"I got pulled over today...."
"Ahhh..
Cops. Hated." (The person is sympathizing with the one who got pulled over by saying how much he hates
cops too.)