How do I distinguish whether to use
v-ed within compound adjective?
To describe any event that takes a lot of time, we use the adjective "time-consuming", not "time-consumed".
From the Cambridge dictionary,
A time-consuming task takes a lot of time to do:
Producing a dictionary is a very time-consuming job.
"time consumed" is not an adjective and it takes on the meaning of "duration", i.e. the amount of time taken for an event.
- While the average length of meetings declined, the total time consumed by meetings increased substantially.
- To begin with, the time consumed in virtual meetings exploded.