Get away to the sun in peace, for a change (6)
I believe the answer is:
escape
'get away' is the definition.
(synonyms)
'the sun in peace for a change' is the wordplay.
'the sun' becomes 'S' (abbreviation).
'in' means one lot of letters goes inside another.
'for a change' indicates an anagram.
'peace' anagrammed gives 'ecape'.
's' inserted within 'ecape' is 'ESCAPE'.
'to' acts as a link.
(Other definitions for escape that I've seen before include "performance by Houdini?" , "Run away from confinement" , "Decamp" , "Get away from the strange EC peas" , "Break loose, get away" .)