What does "opposer" mean?

One who opposes, one who shows opposition.

What is a synonym for "opposer"?

Common synonyms include: adversary, opponent, adventurous, adversary, antagonist, antagonist.

noun

noun ·Uncommon ·Advanced level

Noun

1
One who opposes, one who shows opposition.
"For example, after the opposer had objected to the opposee's plan to drive the car, the opposee suggested, "We can take turns driving the car.""
2
someone who offers opposition wordnet

"For example, after the opposer had objected to the opposee's plan to drive the car, the opposee suggested, "We can take turns driving the car.""

From oppose + -er.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.