upon
uponpreposition
UK/əˈpɒn/US/əˈpɑːn/
ON
B2on, used in formal English
- The decision was based upon the evidence.
STORIES
B1once upon a time is used to begin children's stories
- Once upon a time, there was a little girl who lived in a forest.
UK/əˈpɒn/US/əˈpɑːn/
ON
B2on, used in formal English
STORIES
B1once upon a time is used to begin children's stories