What is the answer to "Source of great power?" in the NYT Crossword?

The answer to the NYT Crossword clue "Source of great power?" is MASTERSWITCH (12 letters).

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Source of great power? NYT Crossword Clue

Across clue · from the October 11, 2025 puzzle

Stuck on “Source of great power?” from the New York Times Crossword? Here is the verified answer:

Answer

MASTERSWITCH

12 letters · Across · last seen October 11, 2025