Avoid shrewd plan (5)
I believe the answer is:
dodge
This might be a double definition.
'avoid' is the first definition.
(dodge can mean to avoid or evade)
'shrewd plan' is the second definition.
'dodge' can be an answer for 'plan' (dodge is a kind of plan). I am not sure about the 'shrewd' bit.
Can you help me to learn more?
(Other definitions for dodge that I've seen before include "Avoid - old American car" , "Avoid - ruse" , "Evade cunningly" , "Avoid by quick movement" , "Duck, move to avoid" .)