Definition of opponent
(Entry 1 of 2)
1
: one that takes an opposite position (as in a debate, contest, or conflict)
She is a formidable opponent in the race for senator. opponents of the war
2
: a muscle that opposes or counteracts and limits the action of another
opponent
adjectiveDefinition of opponent (Entry 2 of 2)
1
: antagonistic, opposing
2
: situated in front
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Merriam-Webster unabridged
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Time Traveler for opponent
The first known use of opponent was in 1553
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