Get free of some harridan (3)
I believe the answer is:
rid
'get free of' is the definition.
(thesaurus)
'some harridan' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'RID' is hidden within 'harridan'.
(Other definitions for rid that I've seen before include "Clear, remove" , "Throw off, unburden" , "Lose, shake off" , "Free from something unpleasant" , "Free, relieve" .)