What does the cryptic crossword clue "Optimistic to boost copper circuit? (6)" mean?

The definition is "Optimistic". The wordplay uses a charade (building blocks). UP (synonym="UP") + BEAT (synonym="BEAT") = UPBEAT; definition: "Optimistic" The answer is UPBEAT.

Optimistic to boost copper circuit? (6)

Times Cryptic #29068 | 28 Across | 2024-11-07 flower

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