Be hopeless at naming twins (7)

I believe the answer is:

despair

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'be hopeless' is the definition.
(I've seen this before)

'naming twins' is the wordplay.
'naming' becomes 'des' (I am not sure about this - if you are sure you should believe this answer much more).
'twins' becomes 'pair' (a pair of twins).
'des'+'pair'='DESPAIR'

'at' acts as a link.

Can you help me to learn more?

(Other definitions for despair that I've seen before include "Misery" , "Complete loss of hope" , "Opposite of 10" , "Resignation" , "Abandon hope" .)

I've seen this clue in the Evening Standard.

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