Hold out longer? (6)
I believe the answer is:
extend
'hold out' is the definition.
(I know that hold out can be written as extend)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for extend that I've seen before include "Carry on" , "Draw out" , "Stretch out, say the hand of friendship" , "Enlarge, widen" , "Hold out or stretch out" .)