Synonyms and Antonyms for hard-coal

1. hard coal (n.)

a hard natural coal that burns slowly and gives intense heat

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2. coal-black (adj.)

of the blackest black; similar to the color of jet or coal

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6. coal (n.)

fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period

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7. hard (adj.)

very strong or vigorous

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8. hard (adj.)

characterized by effort to the point of exhaustion; especially physical effort

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9. hard (adv.)

with firmness

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10. hard (adv.)

causing great damage or hardship

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