Want to keep Kenneth out of the kitchen (4)
I believe the answer is:
itch
'want' is the definition.
(thesaurus)
'kenneth out of the kitchen' is the wordplay.
'kenneth' becomes 'ken' (short for Kenneth).
'out of' indicates named letters should be taken away ('out of' can mean no longer having).
'kitchen' with 'ken' taken away is 'ITCH'.
'to keep' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for itch that I've seen before include "Restless longing" , "It needs scratching" , "Tingle" , "Irritating feeling on the skin" , "Skin sensation; desire" .)