Crossword Genius

Sort of blue when meeting delightful bully (9)

Ross

I believe the answer is:

persecute

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'bully' is the definition.
(thesaurus)

'sort of blue when meeting delightful' is the wordplay.
'sort of blue' becomes 'perse' (I can't justify this - if you can you should give a lot more credence to this answer).
'when meeting' says to put letters next to each other.
'delightful' becomes 'cute' (I've seen this in other clues).
'perse'+'cute'='PERSECUTE'

Can you help me to learn more?

(Other definitions for persecute that I've seen before include "Harass for reasons of politics, religion etc" , "Dog" , "hound" , "Persistently harass" , "victimise" .)

I've seen this clue in The Telegraph.
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