Keep including need to go wading! (4-4)
I believe the answer is:
knee-deep
'go wading' is the definition.
Both the answer and definition are adjectives. Perhaps you can see an association between them that I don't see?
'keep including need' is the wordplay.
'including' indicates putting letters inside.
'keep' placed around 'need' is 'KNEE-DEEP'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for knee-deep that I've seen before include "Deeply involved (in something)" , "Coming half way up the leg" , "(Of water) over the top of one's wellies?" , "Halfway up one's leg" , "Thoroughly involved (in)" .)