Had the rest wrongly spelt (5)
I believe the answer is:
slept
'had the rest' is the definition.
The answer and definition can be both related to bodily activities as well as being past participle verbs.
Maybe there's an association between them I don't understand?
'wrongly spelt' is the wordplay.
'wrongly' indicates an anagram (I've seen this in other clues).
'spelt' with letters rearranged gives 'SLEPT'.
Can you help me to learn more?
(Other definitions for slept that I've seen before include "appeared still" , "Was dormant" , "Napped, dozed" , "Snoozed" , "Had room for" .)