op·po·nent 
(ə-pōnənt)
(ə-pōnənt)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·ponen·cy n.
- Indo-European root: ker-
- Indo-European root: ker-
- Indo-European root: ker-
- Indo-European root: kerd-
- Indo-European root: kerp-
- Indo-European root: kers-
- Indo-European root: kerə-
- Indo-European root: kes-
- Indo-European root: keuə-
- Indo-European root: klei-
- Indo-European root: kleu-
- Indo-European root: ko-
- Indo-European root: kob-
- Indo-European root: kom
- Indo-European root: konk-
- Indo-European root: koro-
- Indo-European root: kost-
- Indo-European root: kous-
- Indo-European root: krei-
- Indo-European root: kreus-
- Indo-European root: kreuə-
- Indo-European root: ksun
- Indo-European root: kwe
- Indo-European root: kwei-
- Indo-European root: kwei-