Today's root of the day is necro. It is neither a prefix nor a suffix; it is a normal Greek root. Necro means "dead". Here are some examples of this root in context:
Necromancy: necro + mancy = divination with the dead
Necropolis: necro + polis = city of the dead
A necropolis is an old word for a cemetery.
And last but not least, the infamous...
Necrophiliac: necro + phil + iac = one who loves the dead
If you really want to know the modern definition for that word, look it up.