Upon synonyms such as after, about, and above. Upon is a preposition, and its antonyms are beneath and under. Additionally, here are 31 synonyms for upon and words similar to it.
About, Above, After, Against, As for, As soon as, At the time of, Atop, Based on, Close to, Concerning, During, Following, Immediately after, In connection with, In consideration of, In light of, In relation to, In the midst of, In the presence of, In the wake of, In view of, Near, On, On the subject of, On top of, Over, Regarding, Subsequently, and With respect to.