Reprimand man and do his turn (8)
I believe the answer is:
admonish
'reprimand' is the definition.
(I've seen this before)
'man and do his turn' is the wordplay.
'and' says to put letters next to each other.
'turn' is an anagram indicator.
'do'+'his'='dohis'
'man' put after 'dohis' is 'dohisman'.
'dohisman' with letters rearranged gives 'ADMONISH'.
(Other definitions for admonish that I've seen before include "Tell off" , "Firmly reprimand" , "criticise" , "Chide, reprove" , "Rebuke, tick off" .)