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"buried" is also used as a crossword clue. If that's what you saw, the answer is often interred (8 letters).
Definitions
Placed underground, covered, hidden, or put in a grave.
Word origin
From bur(y) + -ied.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Placed underground”6 letters
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