Consider to turn back (7)
I believe the answer is:
reflect
This might be a double definition.
'consider' is the first definition.
(I know this)
'turn back' is the second definition.
'reflect' can be an answer for 'turn' (thesaurus). I am not sure about the 'back' bit.
'to' is the link.
Can you help me to learn more?
(Other definitions for reflect that I've seen before include "Act as a mirror" , "Echo, mirror" , "Meditate -- throw back" , "Cogitate" , "Think or cast light" .)