New ideas to which actors may be deaf (5)
I believe the answer is:
aside
'which actors may be deaf' is the definition.
I can't tell whether this defines the answer.
'new ideas' is the wordplay.
'new' indicates an anagram.
'ideas' anagrammed gives 'ASIDE'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for aside that I've seen before include "Remark not for hearing" , "In reserve; actor's remark to audience" , "Digression" , "secretly" , "Words spoken apart in an undertone" .)