Are they very fond of leftovers? (6)

I believe the answer is:

lovers

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'are they very fond' is the definition.
The definition suggests an adverb but the answer is not.

'left-overs?' is the wordplay.
'left' becomes 'l' (common abbreviation).
'l'+'overs'='LOVERS'

'of' is the link.

Can you help me to learn more?

(Other definitions for lovers that I've seen before include "Fans" , "Romeo and Juliet, perhaps" , "Romantic pair" .)

I've seen this clue in the Evening Standard.

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