fairfairfairs2noun1(alsofunfair) a place outdoors where you can ride on big machines and play games to win prizes. Fairs usually travel from town to town.2a large event where people and businesses show and sell the things they make: a book faira world trade fairfairfairfairerfairest1adjective (fairer, fairest)1treating people equally or in the right way: They didn't get a fair trial.It's not fair! I have to go to bed before my sister!oppositeunfair2quite good or quite large: They have a fair chance of winning. They've invited a fair number of people to their party.3(used about a person's skin or hair) light in colour: He's got fair hair.oppositedark4(used about the weather) bright and not raining