There is no 8-letter word, but there are several 7-letter words:agnaticanticarcartingcratinggranitatracing
sextets
There is no 9-letter food word, in fact no 9-letter words. The longest word is attracts (8 letters).
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The 8-letter word that ends with double letters is "bookkeeper." In this word, the letter "e" is repeated twice at the end. The term refers to someone who maintains financial records or accounts for a business or organization. The repetition of the letter "e" in this word is what makes it unique in having double letters at the end.
There is no 8-letter word, but there are several 7-letter words:agnaticanticarcartingcratinggranitatracing
testiest
sextets
The letters spell the word audience. It is an 8 letter word.
Increase and illusion begin with and I and are 8 letters.
"Hazelnut"
literati
Laughter
humanhey
The word is folktale.
"Gambling" is an eight letter word.
An 8 letter word out of methematician is "thematic." It is straightforward, and requires no rearrangement of letters.