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Valid in Scrabble US · 9 points
8 synonyms in 3 meanings · 5 playable in Scrabble US
the region that is inside of something
the inner or enclosed surface of something
the United States federal department charged with conservation and the development of natural resources; created in 1849
Also: department of the interior, interior department.
Not playable in Scrabble US: DOI.
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Dictionary: official Scrabble dictionary (US), UK Scrabble Dictionary, Words with Friends ENABLE