Meaning of “unfair” - Learner’s Dictionary

unfair

adjective us uk /ʌnˈfeər/
The law prevents unfair trade practices.She argued that the new regulations were unfair.He claimed that his competitors had been given an unfair advantage.The agency works to prevent unfair business practices.Observers claimed the trial has been unfair.
NOT EQUAL

B1 not treating people in an equal way:

an unfair system
The test was unfair because some people had seen it before.
NOT RIGHT

B2 not true and morally wrong:

[ + to do sth ] It's unfair to blame Frank for everything.
unfairly adverb
unfairness noun [ U ]

(Definition of “unfair” from the Cambridge Learner’s Dictionary © Cambridge University Press)