Old revolutionary buried up in the cenotaph (4)
I believe the answer is:
tone
'old revolutionary buried' is the definition.
I can't judge whether this definition defines the answer.
'up in the cenotaph' is the wordplay.
'up' says the letters should be written backwards (in down clue: letters go upwards).
'in' indicates the answer is hidden within the clue.
'enot' can be found hidden inside 'cenotaph'.
'enot' back-to-front is 'TONE'.
Can you help me to learn more?
(Other definitions for tone that I've seen before include "A pitch of note" , "Sound - style" , "Quality of sound, etc" , "Quality of a musical or vocal sound" , "Shade" .)