Crossword Genius

Capricious, mad chemist admits they shouldn't have been used together (10)

Ross

I believe the answer is:

mismatched

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'admits they shouldn't have been used together' is the definition.
The definition suggests an adverb but the answer is not.

'capricious mad chemist' is the wordplay.
'capricious' indicates anagramming the letters.
'mad'+'chemist'='madchemist'
'madchemist' with letters rearranged gives 'MISMATCHED'.

Can you help me to learn more?

(Another definition for mismatched that I've seen is " not given fair opposition".)

I've seen this clue in The Irish Times.
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