Go through it! (6)
I believe the answer is:
suffer
'go through' is the definition.
(suffering is a kind of going through)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for suffer that I've seen before include "Experience hurt" , "Undergo pain or privation" , "Undergo pain or grief" , "Undergo pain or discomfort" , "Experience (something bad)" .)