Crossword Genius

Greeting from one again and again denied preferment? (4,4,2,3)

Ross

I believe the answer is:

long time no see

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

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

'from one again and again denied preferment?' is the wordplay.
I cannot really understand how this works, but
'from' could be 'o' (I've seen this in other clues) and 'o' is found within the answer.
an anagram of 'one' is 'eno' which is located in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for long time no see that I've seen before include "Finally we meet again!" , "returned at last" , ""I have missed you"" , "It's ages since we met" , "Haven't met you for ages!" .)

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