The only one I can think of is bookkeeper. Are there others?
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
accessoryaddressaggressiveannuallyappallassessassassinbitternessbuccaneerblurrinessbulletproofbutterballbuttresscassettecarelessnesscarryallcoffeecommissarycommissioncrabbinessfurrinesshappinesspennilesspuffinessruddinesssluggishnessstiffnessstillnessstubbornnessstuffinesssuccesstallnessvolleyballwellnesswheelbarrow
bookkeeper, bookkeeping
Bookkeeping
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.
The following words have three consecutive sets of double letters:bookkeeperbookkeepersbookkeeping
coffeetoffeesettee
accessoryaddressaggressiveannuallyappallassessassassinbitternessbuccaneerblurrinessbulletproofbutterballbuttresscassettecarelessnesscarryallcoffeecommissarycommissioncrabbinessfurrinesshappinesspennilesspuffinessruddinesssluggishnessstiffnessstillnessstubbornnessstuffinesssuccesstallnessvolleyballwellnesswheelbarrow
bookkeeper, bookkeeping
Bookkeeping
fettuccinehiccuppingoccurrencesuccessfulsuccessive
bookkeeper
Mississippi and Tennessee
3. Actually, it is the only English word with 3 sets of double letters in a row.
tattooballooncommitteekeennessraccooncoffeebookkeeper
· Mississippi · Tennessee