Maybe Arthur Miller seethed, suppressed by tense Scotsman (9)
I believe the answer is:
tragedian
'maybe arthur miller' is the definition.
I can't judge whether this definition defines the answer.
'seethed suppressed by tense scotsman' is the wordplay.
'seethed' becomes 'raged' (I've seen this before).
'suppressed by' is a charade indicator (letters next to each other).
'tense' becomes 't' (grammatical abbreviation).
'scotsman' becomes 'ian' (common Scottish name).
'raged' put after 't' is 'traged'.
'traged'+'ian'='TRAGEDIAN'
Can you help me to learn more?
(Other definitions for tragedian that I've seen before include "A great din (anag) - actor" , "Egad, I rant about actor in sad drama" , "Dramatist" , "actor in Macbeth?" , "Egad, I rant about dramatic actor" .)