Doctor mentored us with excellence (10)

I believe the answer is:

tremendous

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

'doctor mentored us with excellence' is the definition.
I can't tell whether this defines the answer.

'doctor mentored us' is the wordplay.
'doctor' indicates anagramming the letters.
'mentored' anagrammed gives 'tremendo'.
'tremendo'+'us'='TREMENDOUS'

Can you help me to learn more?

(Other definitions for tremendous that I've seen before include "large" , "Splendid!" , "Terrific" , "Wonderful" , "Immense" .)

I've seen this clue in The Independent.

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