Burst forth jerkily in deep rut (7)
I believe the answer is:
erupted
'burst forth' is the definition.
(I've seen this in another clue)
'jerkily in deep rut' is the wordplay.
'deep rut' can be anagrammed to 'ERUPTED'.
Though, I am unsure how this is indicated.
Can you help me to learn more?
(Other definitions for erupted that I've seen before include "Blew up or out as volcano may" , "Broke out (like Etna)" , "Blew up like volcano" , "Broke out suddenly" .)