Steadfast listeners forgot November broadcast (8)
I believe the answer is:
tireless
'steadfast' is the definition.
(thesaurus)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for tireless that I've seen before include "Never wearying" , "Indefatigable, unflagging" , "Having inexhaustible energy" , "Full of energy" , "Permanently lively" .)