If you are a just teacher, you wont give your student an f just because his mother is rude to you. See synonyms at fair1. Just means fair. when something is morally and ethically sound, its just. Just synonyms, just pronunciation, just translation, english dictionary definition of just. Honorable and fair in ones dealings and actions: At the present time: Now, very soon, or very recently: See examples of just used in a sentence. The meaning of just is having a basis in or conforming to fact or reason : Guided by truth, reason, justice, and fairness. Synonym discussion of just. The jordan university of science and technology organizes dialogue sessions and interactive activities in partnership with the crown prince foundation. How to use just in a sentence.