The word "un-justest" does not have any specific antonyms since it is not a recognized word in the English language. However, we can look at the antonyms for the word "justified," which means to prove that something is right or correct. The antonyms for justified are unjust, unwarranted, unfair, and biased. These antonyms represent the opposite of justification and describe situations that are not reasonable, truthful or fair. It is important to use just and unbiased methods in decision-making, to ensure that everyone is treated equally and fairly, regardless of race, gender, or ethnicity.