Strong resentment of a bit of a clanger (5)

I believe the answer is:

anger

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

'strong resentment' is the definition.
'anger' can be an answer for 'resentment' (I've seen this in another clue). I am unsure of the 'strong' bit.

'a bit of a clanger' is the wordplay.
'ANGER' is hidden within the letters.
However, I'm not sure how the hidden word is indicated.

'of' acts as a link.

Can you help me to learn more?

(Other definitions for anger that I've seen before include "Fire" , "Extreme annoyance" , "Emotion" , "Hack off" , "exasperation" .)

I've seen this clue in the Evening Standard.

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