Crossword Genius

Keenly expectant, with nothing in abundance (5)

Ross

I believe the answer is:

agogo

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

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

'keenly expectant with nothing' is the wordplay.
'keenly expectant' becomes 'agog' (I've seen this in another clue. I am not sure about the 'keenly' bit.).
'with' is a charade indicator (letters next to each other).
'nothing' becomes 'O' (O resembles 0).
'agog'+'o'='AGOGO'

Can you help me to learn more?

(Another definition for agogo that I've seen is " in abundance".)

I've seen this clue in The Times.
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