Phrasal Verbs Using 'On' & 'Upon' - Understanding or Contemplating (On)

to understand a concept

to carefully think about something for a while

to manage to understand something, typically following an initial period of challenge or difficulty

to become clear, evident, or understood, particularly after some time

to think or talk about something at length, often to the point of overthinking or obsessing about it

to think carefully and deeply about something

to postpone making a decision until the next day or a later time, often to think about it more

to finally understand something, usually after some initial difficulty

to intend to do something in the future based on certain considerations or expectations