Tough, stretch across to grab the man (7)
I believe the answer is:
spartan
'tough' is the definition.
(thesaurus)
'stretch across to grab the man' is the wordplay.
'stretch across' becomes 'span' (I've seen this in another clue).
'to grab' is an insertion indicator.
'the man' becomes 'art' ().
'span' enclosing 'art' is 'SPARTAN'.
(Other definitions for spartan that I've seen before include "Austere - disciplined" , "Austere - like Lysander?" , "Austere, lacking comfort" , "Frugal" , "Not comfortable" .)