Use hatchet on it, Ken; I accept it without complaining (4,2,2,3,4)
I believe the answer is:
take it on the chin
'accept it without complaining' is the definition.
I can't judge whether this defines the answer.
'use hatchet on it ken i' is the wordplay.
'use' indicates an anagram.
'hatchet'+'on'+'it'+'ken'+'i'='hatchetonitkeni'
'hatchetonitkeni' anagrammed gives 'TAKE IT ON THE CHIN'.
Can you help me to learn more?
(Other definitions for take it on the chin that I've seen before include "facing razor blade?" , "Accept defeat stoically" , "Be courageous" , "face the situation stoically" , "as a boxer might?" .)