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FOIL
Foil (noun) — a piece of thin and flexible sheet metal. 2. (noun) anything that serves by contrast to call attention to another thing's good qualities.
“the photographic film was wrapped in foil”
Foil is a valid 4-letter word worth 7 points in Scrabble (and Words With Friends letter values vary). Below are its anagrams and the shorter words hidden inside it.