Ugly
Fair, just, honest, unprejudiced...The opposite of unfair is fair.
Fair is opposite. Foul Ball, Fair Ball.
If by fair you mean just and according to the rules then the opposite will be unfair If by fair you mean pretty or blonde the opposite would be ugly or dark-haired
fair
The opposite of fair (just, right) would be unfair or unjust. The opposite of fair (light, as in complexion) would be dark.
lie
unfair (?)
unfair
Fair
Fair fairness
It depends how you are using fair-play. Try one of these: misbehave, disparity, unfairness, injustice, discrimination.
Buddha is known as the "enlightened one" so a fair opposite would be "ignorant".