On going in opposite directions, best to be persistent (3-4)
I believe the answer is:
non-stop
'be persistent' is the definition.
I can't judge whether this defines the answer.
'on going in opposite directions best' is the wordplay.
'going in' means one lot of letters goes inside another.
'opposite directions' becomes 'ns' (opposite compass points).
'best' becomes 'top' ('top' can be similar in meaning to 'best').
'on' put into 'ns' is 'nons'.
'nons'+'top'='NON-STOP'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for non-stop that I've seen before include "Unceasing" , "Uninterrupted" , "continuously" , "Going straight from A to B" , "Continuous" .)