Relaxed during conversation (3)
I believe the answer is:
sat
'relaxed' is the definition.
(sitting is a type of relaxing)
'during conversation' is the wordplay.
'during' indicates the answer is hidden within the clue.
'SAT' is hidden within 'conversation'.
(Other definitions for sat that I've seen before include "Took a seat and posed for a portrait" , "Used a chair" , "Pulled up a 29 down" , "Took a chair" , "Was couch potato" .)