Try hard (9)
'try hard' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for strive that I've seen before include "Vie, contend" , "Vie; compete" , "Work hard - compete" , "Rivets (anag)" , "Make great efforts" .)
'try hard' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for endeavour that I've seen before include "famous ship" , "Expenditure of effort" , "Try hard; enterprise" , "Industrious effort" , "The first handle inspector has" .)