Withstands (7)
'withstands' is the definition.
('resist' can be a synonym of 'withstand')
This is all the clue.
(Other definitions for resists that I've seen before include "Fights back" , "Struggles against" , "Defends" , "Stands up to, withstands" , "Sisters (anag.)" .)
(Other definitions for sustains that I've seen before include "Supports physically or mentally" , "keeps going" , "Bears" , "Nourishes or bolsters" , "It's Susan (anag.)" .)
'withstands' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for takes that I've seen before include "Removes" , "Steak (anag.)" , "sections of film" , "Steals" , "Filmed scenes" .)