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Updated June 2026
Beneath the surface of the earth, or operating secretly and often illegally. It can also refer to railway systems running below ground.
“The underground railway system connects all major areas of the city.”
/ˌʌndəˈɡraʊnd/
un·der·ground
Contains two U's and two R's; compound word UNDER-GROUND
Worth 14 points; good length for strategic placement
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