Turn back, or always right around (6)
I believe the answer is:
revert
'turn back' is the definition.
(synonyms)
'always right around' is the wordplay.
'always' becomes 'ever' (synonyms).
'right' becomes 'rt' (abbreviation as in Rt Hon- the Right Honourable).
'around' means one lot of letters goes inside another.
'ever' inserted inside 'rt' is 'REVERT'.
'or' is the link.
(Other definitions for revert that I've seen before include "Go back to a previous state" , "Regress" , "Go back (to topic)" , "Go back to type" , "Go back to former state or habit" .)