Early disheartenment for Solomon (4)

I believe the answer is:

soon

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'early' is the definition.
(I've seen this in another clue)

I can't explain the remainder of the clue.

(Other definitions for soon that I've seen before include "Early; readily" , "In the near future" , "In a little while" , "in a minute" , "Before long" .)

I've seen this clue in the Evening Standard.

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