Coffee.
bookkeeper
fettuccinehiccuppingoccurrencesuccessfulsuccessive
The English word BOOKKEEPING or BOOKKEEPER has three sets of consecutive double letters. SUBBOOKKEEPER is the only word with four sets of consecutive double letters, although these words should be hyphenated.
coffeetoffeesettee
Mississippi
tattooballooncommitteekeennessraccooncoffeebookkeeper
balloon coffee
ballon embarrass coffee raccoon tennessee mississippi football
The English word with three consecutive double letters is "bookkeeper."
balloon embarrass coffee raccoon tennessee mississippi football
Mississippi has three sets of doubled letters, two double s pairs, and one double p pair. Tennessee also has three pairs of doubled letters in its name.
Bookkeeping