Crossword Genius

Agrees with proposal for more to eat (7)

Ross

I believe the answer is:

seconds

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'agrees' is the definition.
Although both the answer and definition are verbs in their -s form, I don't see how they can define each other.

I don't understand the remainder of the clue.

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(Other definitions for seconds that I've seen before include "They should be present at a duel" , "Endorses proposal" , "More food!" , "Supporters - they are blemished" , "Short periods of time for supporters" .)

I've seen this clue in The Independent.
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