French thinker annoyed Hegel ultimately (5)

I believe the answer is:

sorel

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'french thinker' is the definition.
The definition suggests a singular noun which matches the answer.

'annoyed hegel ultimately' is the wordplay.
'annoyed' becomes 'sore'.
'ultimately' indicates one should take the final letters.
The final letter of 'hegel' is 'l'.
'sore'+'l'='SOREL'

Can you help me to learn more?

(Other definitions for sorel that I've seen before include "Light chestnut horse" , "Deer" , "young buck" .)

I've seen this clue in The Independent.

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