A young lady is wrong (5)

I believe the answer is:

amiss

'is wrong' is the definition.
(synonyms)

'a young lady' is the wordplay.
'young lady' becomes 'miss' (term of address for a young woman).
'a'+'miss'='AMISS'

(Other definitions for amiss that I've seen before include "Mistaken" , "Haywire" , "Wrong; inaccurate" , "inappropriately" , "Mistakenly" .)

I've seen this clue in The Daily Express.

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