Hiding at home reflects signs of negativity (7)

I believe the answer is:

minuses

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'signs of negativity' is the definition.
I don't know anything about this answer so I cannot judge whether this works.

'hiding at home reflects' is the wordplay.
'hiding' indicates putting letters inside.
'at home' becomes 'in' ('I'm in' can mean 'I'm at home').
'reflects' becomes 'muses' ('muse' can be a synonym of 'reflect').
'in' inserted into 'muses' is 'MINUSES'.

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I've seen this clue in The Independent.

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