The word "un-fairly" basically means unfairly or unjustly. However, one of the antonyms for un-fairly would be fairly or justly. When something is done fairly, it denotes impartiality and justice. On the other hand, when something is done unfairly or unjustly, it is characterized by partiality, bias, and discrimination. Another antonym for un-fairly would be honestly, indicating that a person or an act has been carried out with sincere, straightforwardness, and integrity. Further, the antonyms for un-fairly could also include equitably, righteously, openly, and honorably, all of which connote a sense of justice, fairness, and morality.