5 words for BFF 1–3 letters

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1 letter (2)

b f
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2 letters (2)

fb ff
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3 letters (1)

bff
Kind of apple
?
E
?
A
?
T
?
E
?
R
Hint 1 meaning
One who, or that which, eats.
Hint 2 anagram
ETAER
Hint 3 another clue
greedy person
11 +1