As nouns the difference between proxy and enmity
is that
proxy is an agent or substitute authorized to act for another person or
proxy can be (gaming|slang) a proximity mine; a mine that explodes when something approaches within a certain distance while
enmity is the quality of being an enemy; hostile or unfriendly disposition.
As an adjective proxy
is used as a proxy or acting as a proxy.
As a verb proxy
is to serve as a proxy for.