Get crook retailers at heart (3)
I believe the answer is:
ail
'get' is the definition.
The definition and answer can be both related to bodily activities as well as being verbs in their base form.
Maybe you can see an association between them that I can't see?
'crook retailers at heart' is the wordplay.
'at heart' indicates a hidden word (letters hidden in the heart of the clue).
'AIL' is hidden within 'crook retailers'.
Can you help me to learn more?
(Other definitions for ail that I've seen before include "Be in poor health" , "Trouble, afflict; be sickly" , "Sink" , "Worry" , "Become sick" .)