30 upon synonyms include On, Atop, Over, Above, Regarding, Concerning, Following, After, In the wake of, and As for. Upon is a preposition, and its antonyms are beneath and under. Here are some additional synonyms for "upon" with example sentences.
30 other ways to say upon.
Additional support is available upon request.
His success is dependent upon effort.
She smiled upon seeing her friends.
They decided upon a new strategy.
upon arrival, we started exploring.