1. In contact with, on top of
   "the book upon the table"
   - on

1. Being up to particular standard or level especially in being up to date in knowledge
   "up on the news"
   - abreast, au courant, au fait, apace [N. Amer]

See also: informed

Encyclopedia: Upon

• commercialise
• commercialised
• commercialism
• commercialization
• commercialize
• commercialized
• commercially
• commie
• comminate
• commination
• comminatory
• commingle
• comminute
• comminuted fracture
• comminution
• Commiphora
• Commiphora meccanensis
• Commiphora myrrha
• commis
• commis chef
• commiserate
• commiseration
• commiserative
• Commissaire Maigret
• commissar