unfair
Definitions
Not based on or behaving according to the principles of equality and justice.
Not legitimate or permissible according to the rules of a game or sport.
Examples
It feels unfair that she has to work on the weekend while everyone else is off.
The referee made an unfair call that cost the team the championship game.
He complained that the distribution of chores in the house was completely unfair.
Synonyms
unjust biased inequitable partial prejudiced one-sided discriminatory