Crossword Genius

Are misguidedly upsetting a listener (3)

Ross

I believe the answer is:

ear

I'm a little stuck... Click here to teach me more about this clue!

'a listener' is the definition.
(body part which hears or listens)

'are misguidedly upsetting' is the wordplay.
'are' anagrams to 'EAR'.
But, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for ear that I've seen before include "Go astray" , "Aural organ" , "'Give every man thine ..., but few thy voice'/Hamlet" , "Part of cereal plant containing seed" , "Hearing aid?" .)

I've seen this clue in the Evening Standard.
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