acceptable and appropriate in a particular situation. a fair deal/wage/price; The punishment was very fair. In the end, a draw was a fair result.

used to tell someone to be reasonable in their judgment of someone or something Be fair! She didn't know you were coming. by fair means or foul.

a type of entertainment in a field, park, or street at which people can ride on large machines, play games to win prizes, watch performers, etc.

adjective I. Beautiful, agreeable. I.1. Beautiful to the eye; of attractive appearance; good-looking. Cf. foul adj. I.7a. Now somewhat archaic and literary.

a type of entertainment in a field or park at which people can ride on large machines and play games to win prizes

There are five meanings listed in OED's entry for the verb fair, three of which are labelled obsolete. See 'Meaning & use' for definitions, usage, and ...

fair adverb /feə(r)/ /fer/ Idioms according to the rules; in a way that is considered to be acceptable and appropriate.

according to the rules; in a way that is considered to be acceptable and appropriate. Come on, you two, fight fair! They'll respect you as long as you play ...

​(of people) behaving in a particular way or doing a particular activity only when it is pleasant for them. a fair-weather friend (= somebody who stops ...

treating someone in a way that is right or reasonable, or treating a group of people equally and not allowing personal opinions to influence your judgment.