Witches’ irritation (4)

I believe the answer is:

itch

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

'irritation' is the definition.
(I've seen this before)

'witches' is the wordplay.
'ITCH' is hidden in amongst the letters.
However, I'm uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for itch that I've seen before include "Tickle; urge" , "Irritate" , "Prickling" , "burn" , "Yen" .)

I've seen this clue in The Mirror.

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