Initially, elevated poetry is considered this (4)
I believe the answer is:
epic
'this' is the definition.
The definition suggests a singular noun which matches the answer.
'initially elevated poetry is considered' is the wordplay.
'initially' indicates taking the first letters.
The initial letters of 'elevated poetry is considered' is 'EPIC'.
Can you help me to learn more?
(Other definitions for epic that I've seen before include "Long account" , "Great movie" , "Large in scale" , "Larger than life" , "of impressive proportions?" .)