Criticize Prospero as tiresome part (5)
I believe the answer is:
roast
'criticize' is the definition.
(thesaurus)
'prospero as tiresome part' is the wordplay.
'part' indicates a hidden word.
'ROAST' can be found hidden inside 'prospero as tiresome'.
(Other definitions for roast that I've seen before include "Berate - cook" , "Traditional Sunday lunch" , "Traditional Sunday joint?" , "Criticise severely" , "Have a go at" .)