“+ adverb
: in an unfair manner:
a. : unjustly , inequitably
raised his prices unfairly
b. : with partiality
decided the case unfairly
c. : unreasonably
it might, therefore, not unfairly be assumed — T.H.Huxley
d. : not in accordance with the rules governing a competition
played so unfairly no one enjoyed playing with him