► unfair/not fair not right or fair, especially because not everyone has an equal opportunity: · The present welfare system is grossly unfair.· It’s not fair that people are paying different prices for the same tickets.
► unjust not fair or right according to the principles of a particular society: · He believed it was an illegal and unjust war.· unjust laws
► unequal unfair because people are treated in different ways or because some people have more power than others: · We live in a deeply unequal society.· the unequal distribution of global resources
► inequitable formal unfair because people are treated in different ways, or because some people have more power than others: · inequitable tax laws· The system is inequitable, because it makes it possible for rich people to buy a place at university.
► biased unfairly against or in favour of a particular group: · biased reporting· There were claims that prison bosses were racially biased.· The policy was biased against women.· The trade laws are biased in favour of rich countries.
not equally fair to everyone: 
an inequitable distribution of wealth—inequitably adverb