Wrongful
Part of speech: adjective
Definition: wrong or unjust unlawful or illegal
Unjust
Part of speech: adjective
Definition: Not fair, just or right.
Example sentence: Let there be an end to the arrogance of the big powers who miss no opportunity to put the rights of the people in question. Africa's absence from the club of those who have the right to veto is unjust and should be ended.