Volunteer's drop in enthusiasm, mostly ignored (5)
I believe the answer is:
opine
'volunteer's drop in enthusiasm mostly ignored' is the definition.
I can't judge whether this definition defines the answer.
'volunteer's drop in enthusiasm mostly' is the wordplay.
'mostly' indicates a hidden word (most of the letters in the clue).
'OPINE' is hidden within 'volunteers drop in enthusiasm'.
Can you help me to learn more?
(Other definitions for opine that I've seen before include "Proffer a view" , "judge" , "Conjecture" , "Express one's opinion openly" , "State one's held view" .)