Regularly suppressing anger round a poet (6)
I believe the answer is:
neruda
'poet' is the definition.
(poet Pablo Neruda)
'regularly suppressing anger round a' is the wordplay.
'regularly suppressing' means one should take alternating letters.
'anger'+'round'='angerround'
The alternating letters of 'angerround' are 'nerud'.
'nerud'+'a'='NERUDA'
(Other definitions for neruda that I've seen before include "S American poet" , "Pablo --, Chilean poet and politician" .)