We lost perhaps having this score? (6)

I believe the answer is:

lowest

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'this score?' is the definition.
Both the answer and definition are adjectives. Perhaps there's an association between them I don't understand?

'we lost perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'we'+'lost'='welost'
'welost' anagrammed gives 'LOWEST'.

'having' is the link.

Can you help me to learn more?

(Other definitions for lowest that I've seen before include "extremely vulgar" , "Nadir" , "Nethermost" , "Given maximum reduction" , "Furthest down" .)

I've seen this clue in The Globe and Mail.

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