Spiteful communist about to wander aimlessly (7)
I believe the answer is:
meander
'wander aimlessly' is the definition.
(I've seen this before)
'spiteful communist about' is the wordplay.
'spiteful' becomes 'mean' (synonyms).
'communist' becomes 'red' (red can informally mean communist).
'about' says the letters should be written in reverse.
'red' written backwards gives 'der'.
'mean'+'der'='MEANDER'
'to' acts as a link.
(Other definitions for meander that I've seen before include "circuitous route" , "Aimless course" , "roundabout route" , "Wander without aim or direction" , "Wandering direction" .)