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underground

Underground is a 11 letter word which starts with the letter U and ends with the letter D for which we found 4 definitions.

Definition
(n.) The place or space beneath the surface of the ground; subterranean space.
(a.) Being below the surface of the ground; as an underground story or apartment.
(a.) Done or occurring out of sight; secret.
(adv.) Beneath the surface of the earth.
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