A word in one's ear from aides (5)
I believe the answer is:
aside
'a word in one's ear' is the definition.
I can't judge whether this defines the answer.
'from aides' is the wordplay.
'from' indicates anagramming the letters (from the letters).
'aides' anagrammed gives 'ASIDE'.
Can you help me to learn more?
(Other definitions for aside that I've seen before include "Stage whisper" , "Actors comment to his audience" , "Actor's covert line" , "Separately" , "secretly" .)