Wild rage leads to ultimate trouble, you’ll admit (5)
I believe the answer is:
agree
'admit' is the definition.
(thesaurus)
'wild rage leads to ultimate trouble' is the wordplay.
'wild' is an anagram indicator.
'leads' means one lot of letters go next to another.
'to ultimate' suggests the final letters.
The last letter of 'trouble' is 'e'.
'rage' with letters rearranged gives 'agre'.
'agre'+'e'='AGREE'
'you'll' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for agree that I've seen before include "Arrive at a settlement" , "Be of one mind" , "See eye to eye" , "share the same view" , "Shake on it" .)