Synonyms and Antonyms for underground-railway

1. Underground Railway (n.)

secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War

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2. underground (adj.)

under the level of the ground

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3. underground (n.)

a secret group organized to overthrow a government or occupation force

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4. underground (n.)

an electric railway operating below the surface of the ground (usually in a city)

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5. underground (adj.)

conducted with or marked by hidden aims or methods

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6. railway (n.)

line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight

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