Violent spurt after commencement of emission goes off (6)
I believe the answer is:
erupts
'goes off' is the definition.
The answer and definition can be both related to change as well as being verbs in their -s form.
Perhaps you can see an association between them that I can't see?
'violent spurt after commencement of emission' is the wordplay.
'violent' is an anagram indicator.
'after' means one lot of letters go next to another.
'commencement of' indicates taking the first letters.
The first letter of 'emission' is 'e'.
'spurt' anagrammed gives 'rupts'.
'rupts' after 'e' is 'ERUPTS'.
Can you help me to learn more?
(Other definitions for erupts that I've seen before include "Explodes" , "loses temper?" , "Breaks out suddenly" , "Breaks out abruptly" , "Bursts" .)