Lodge in temporary accommodation (6)
I believe the answer is:
encamp
'lodge in temporary accommodation' is the definition.
The answer and definition can be both to do with fundamental existence as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
This is the entire clue.
Can you help me to learn more?
(Other definitions for encamp that I've seen before include "set up home?" , "Settle into a tent" , "Settle in tents" , "Put up tents" , "Set up tents" .)