Send SAS off to get hurt (7)
I believe the answer is:
sadness
'hurt' is the definition.
(thesaurus)
'send sas off' is the wordplay.
'off' indicates anagramming the letters.
'send'+'sas'='sendsas'
'sendsas' with letters rearranged gives 'SADNESS'.
'to get' acts as a link.
(Other definitions for sadness that I've seen before include "Unhappy feeling" , "distress" , "Depression" , "Sorrowfulness" , "no joy there" .)