Crossword Genius

It's foolish to be foxy about just one pound (5)

Ross

I believe the answer is:

silly

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'it's foolish' is the definition.
(similar in meaning)

'foxy about just one pound' is the wordplay.
'foxy' becomes 'sly' (synonyms).
'about' indicates putting letters inside.
'just one' becomes 'i' (Roman numeral. I am not sure about the 'just' bit.).
'pound' becomes 'l'.
'i'+'l'='il'
'sly' going around 'il' is 'SILLY'.

'to be' acts as a link.

Can you help me to learn more?

(Other definitions for silly that I've seen before include "Trivial, frivolous" , "Absurd" , "Ludicrous, foolish" , "Daft" , "Ridiculous, frivolous" .)

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