opponency

enUK

op·po·nent

O0097800 (ə-pō′nənt)n.1. One that opposes another or others, as in a battle, contest, or debate: a political opponent.2. One who is hostile to an idea or cause: an opponent of gun control.adj. Acting against an antagonist or opposing force: opponent armies.
[Latin oppōnēns, oppōnent-, present participle of oppōnere, to oppose; see oppose.]
op·po′nen·cy n.

opponency

1. the state or quality of being an opponent.
2. an act or instance of opposing.
See also: Conflict