By the sound of it, committee nodding off? (5)
I believe the answer is:
bored
'by the sound of it committee nodding off?' is the definition.
I can't tell whether this definition defines the answer.
'by the sound of it committee' is the wordplay.
'by the sound of it' indicates a 'sounds like' (homophone) clue.
'committee' becomes 'board' (board is a kind of committee).
'board' sounds like 'BORED'.
Can you help me to learn more?
(Other definitions for bored that I've seen before include "Drilled; fed up" , "World-weary" , "Robed (anag.)" , "Filled with ennui" , "Short of things to do, maybe" .)