Educated CEO learnt forbearance (9)

I believe the answer is:

tolerance

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

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

'educated ceo learnt' is the wordplay.
'ceo learnt' anagrams to 'TOLERANCE'.
Though, I'm not clear how this is indicated.

Can you help me to learn more?

(Other definitions for tolerance that I've seen before include "Amount of play" , "Open-mindedness" , "example of permissiveness" , "See 10" , "broad-mindedness" .)

I've seen this clue in The Daily Mail.

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