One right suppressed among others — tough! (9)

I believe the answer is:

resilient

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

'one right suppressed among others' is the wordplay.
'one' becomes 'I' (Roman numeral).
'right suppressed' becomes 'lien' (I can't justify this - if you can you should give a lot more credence to this answer).
'among' means one lot of letters goes inside another.
'others' becomes 'rest' (I've seen this in another clue).
'i'+'lien'='ilien'
'ilien' put into 'rest' is 'RESILIENT'.

Can you help me to learn more?

(Other definitions for resilient that I've seen before include "Hardy" , "Elastic" , "Rebounding from impact" , "Able to recover quickly" , "Tough" .)

I've seen this clue in The Guardian.

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