Moved (7)

'moved' is the definition.
(shifting is a kind of moving)
This is the entire clue.
(Other definitions for shifted that I've seen before include "Moved (position)" , "Changed place or direction" .)
(Other definitions for stirred that I've seen before include "Roused; mixed (a liquid)" , "Rose from sleep" , "Excited" , "Aroused; agitated" , "like Earl Grey sometimes?" .)