Unusual, sweaty pic a lawyer suppressed (8)

I believe the answer is:

atypical

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

'unusual' is the definition.
(I know that atypical is a more specific form of the attribute unusual)

'sweaty pic a lawyer suppressed' is the wordplay.
'ATYPICAL' is hidden within the letters.
However, I'm uncertain how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for atypical that I've seen before include "Nonconforming" , "Eccentric" , "Not normal" , "Uncharacteristic" , "out of character" .)

I've seen this clue in the Sydney Morning Herald.

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