Knowledgeable healthy socialist, say (8)
I believe the answer is:
wellread
'knowledgeable' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'healthy socialist say' is the wordplay.
'healthy' becomes 'well' (similar in meaning).
'socialist' becomes 'red' (red can informally mean a socialist).
'say' indicates a 'sounds like' (homophone) clue.
'red' is a homophone of 'read'.
'well'+'read'='WELLREAD'
Can you help me to learn more?
(Other definitions for wellread that I've seen before include "cultivated" , "Literate" .)