Crossword Genius

Optimistic to boost copper circuit? (6)

Ross

I believe the answer is:

upbeat

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'optimistic' is the definition.
(similar in meaning)

'boost copper circuit?' is the wordplay.
'boost copper' becomes 'up' (I am not sure about this - if you are sure you should believe this answer much more).
'circuit?' becomes 'beat' ('beat' can be a synonym of 'circuit').
'up'+'beat'='UPBEAT'

'to' is the link.

Can you help me to learn more?

(Other definitions for upbeat that I've seen before include "Optimistic, positive" , "Cheerful and encouraging, like lively music" , "Optimistic (colloq.)" , "Heartening" , "Relentlessly optimistic" .)

I've seen this clue in The Times.
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