Surviving (6)
'surviving' is the definition.
(synonyms)
This is all the clue.
(Other definitions for extant that I've seen before include "Still existing, not obsolete" , "Still existing, actual" , "Still around" , "Still present and existing" , "Still in existence, surviving" .)
'surviving' is the definition.
('endure' can be a synonym of 'survive')
This is all the clue.
(Other definitions for enduring that I've seen before include "Eternal" , "Going through" , "Bearing patiently or lasting" , "Lasting' tolerating" , "Putting up with patiently" .)