Hack off lizard's tail with inarticulate sound? Man perhaps admits it (10)

'hack off lizard's tail with' is the definition.
I can't judge whether this defines the answer.

'inarticulate sound? man perhaps admits it' is the wordplay.
'inarticulate sound?' becomes 'grunt' (I've seen this before).
'man perhaps' becomes 'disl' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'admits' is an insertion indicator.
'it' becomes 'e' ('e' can mean 'electronic' which is similar to 'IT').
'grunt' placed within 'disl' is 'disgruntl'.
'disgruntl'+'e'='DISGRUNTLE'

Can you help me to learn more?