Lack of action but in time it rises (7)
I believe the answer is:
inertia
'lack of action' is the definition.
(I've seen this before)
'in time it rises' is the wordplay.
I cannot really understand how this works, but
'in' is within the answer.
'time' could be 't' (abbreviation) and 't' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is located in the answer.
The remaining letters 'ria' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'but' is the link.
Can you help me to learn more?
(Other definitions for inertia that I've seen before include "Tendency to inactivity" , "motionless?" , "Motionlessness" , "Passivity" , "Disposition to do nothing" .)