Poet's socially acceptable, did you say? (5)
I believe the answer is:
donne
'poet's' is the definition.
(16th- and 17th- century poet John Donne)
'socially acceptable did you say?' is the wordplay.
'socially acceptable' becomes 'done' (I've seen this in another clue).
'did you say?' indicates a 'sounds like' (homophone) clue.
'done' sounds like 'DONNE'.
(Other definitions for donne that I've seen before include "basic assumption" , "English preacher and metaphysical poet, d. 1631" , "John -, English poet" , "Writer of poetry" .)