About to sit and take it easy (6)
I believe the answer is:
repose
'take it easy' is the definition.
(I've seen this before)
'about to sit' is the wordplay.
'about' becomes 're' (regarding).
'to sit' becomes 'pose' (as in sitting for a painter).
're'+'pose'='REPOSE'
'and' acts as a link.
(Other definitions for repose that I've seen before include "Quiet restfulness" , "place" , "Relaxation" , "Lie at rest" , "Rest - tranquillity" .)