agonist

noun 0.833

antagonism

noun 0.789

opponent

noun 0.724

protagonist

noun 0.698

adversary

noun 0.682

opposer

noun 0.672

antonym

noun 0.662

aggressor

noun 0.641

archenemy

noun 0.638

competitor

noun 0.637

archnemesis

noun 0.624

oppositionist

noun 0.623

enemy

noun 0.623

antithesis

noun 0.621

antihero

noun 0.618

inhibitor

noun 0.618

anti

noun 0.616

foe

noun 0.615

antigen

noun 0.602

opposition

noun 0.594

rival

noun 0.589

antidote

noun 0.586

contrarian

noun 0.586

antioxidant

noun 0.585

bad guy

noun 0.582

villian

noun 0.580

agonic

noun 0.576

nemesis

noun 0.576

counteract

noun 0.575

antichrist

noun 0.574

anticipator

noun 0.573

agitator

noun 0.573

enemy of the people

noun 0.572

antiparticle

noun 0.572

reactant

noun 0.571

archrival

noun 0.571

anticholinergic

noun 0.570

actant

noun 0.567

objector

noun 0.566

contradictory

noun 0.565

protagonism

noun 0.564

combatant

noun 0.563

antipathy

noun 0.562

adversative

noun 0.561

contender

noun 0.560

hostile

noun 0.559

oppressor

noun 0.558

interactor

noun 0.558

detractor

noun 0.557

opposite

noun 0.557

instigator

noun 0.557

antonymy

noun 0.557

obstructionist

noun 0.554

actor

noun 0.553

worst enemy

noun 0.553

activist

noun 0.551

antithrombotic

noun 0.547

anticonvulsant

noun 0.547

anarchist

noun 0.546

attacker

noun 0.546

actioner

noun 0.545

antiestrogen

noun 0.545

antithrombin

noun 0.543

antipsychotic

noun 0.543

agon

noun 0.543

interactant

noun 0.542

contrary

noun 0.542

disagreeable

noun 0.542

counteraction

noun 0.542

villainess

noun 0.541

avenger

noun 0.539

antiviral

noun 0.539

dissident

noun 0.538

disrupter

noun 0.537

enzyme inhibitor

noun 0.537

antiradical

noun 0.535

repressor

noun 0.535

provoker

noun 0.535

neutralizer

noun 0.535

antisocial

noun 0.534

antibody

noun 0.533

antifeminist

noun 0.533

enantiomer

noun 0.533

anta

noun 0.532

counterargument

noun 0.532

contradiction

noun 0.532

antacid

noun 0.532

reactionary

noun 0.532

antic

noun 0.531

antisystem

noun 0.531

annihilator

noun 0.531

agonistics

noun 0.531

antiabolitionist

noun 0.531

antipode

noun 0.529

antihumanist

noun 0.529

antitoxin

noun 0.528

antiproton

noun 0.528

ant

noun 0.527

antiterrorist

noun 0.527

antimonarchist

noun 0.526