Shifty thing to do? (4)
I believe the answer is:
move
This might be a double definition.
'shifty thing' is the first definition.
'move' can be an answer for 'thing' (thesaurus). I'm not certain of the 'shifty' bit.
'do?' is the second definition.
(moving is a kind of doing)
'to' is the link.
Can you help me to learn more?
(Other definitions for move that I've seen before include "Relocate" , "Manoeuvre; go" , "Budge" , "Go, transport" , "Stir - change places" .)