Upon — synonyms, definition

1. upon (o)

about above by covering during in contact with on on top of over through throughout touching

2. upon (Adjective)

abreast apace au courant au fait

upon (Adjective) — Being up to particular standard or level especially in being up to date in knowledge. ex. "up on the news"

3. upon (Preposition)

upon (Preposition) — In contact with, on top of. ex. "the book upon the table"

upon (Preposition) — Supported by. ex. "balanced upon one leg"

upon (Preposition) — At or following a prescribed point in time. ex. "The contract was rendered void upon his death"