Tragedy allowed by amateurish thespian (6)
I believe the answer is:
hamlet
'tragedy' is the definition.
(I've seen this before)
'allowed by amateurish thespian' is the wordplay.
'allowed' becomes 'let' (to let is to allow or permit).
'by' says to put letters next to each other.
'amateurish thespian' becomes 'ham' (ham is a kind of thespian. I am not sure about the 'amateurish' bit.).
'let' put after 'ham' is 'HAMLET'.
Can you help me to learn more?
(Other definitions for hamlet that I've seen before include "Small village for Shakespeare prince" , "Small village of a Danish prince" , "(Hero of) play" , "Danish king in play" , "Dramatic prince of Denmark" .)