Bookkeeper. Although Subbookkeeper has four.
The word "bookkeeper" is a word in the English dictionary that has 3 double letters in succession.
3. Actually, it is the only English word with 3 sets of double letters in a row.
bookkeeper
Mississippi
committee
bookkeeper, bookkeeping
bookkeeping
bookkeeper
Mississippi
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 English word with three consecutive double letters is "bookkeeper."
No words were found in the English dictionary. The name Exxon has a double x. Exxon is a brand of petroleum based products manufacturered by the ExxonMobil company.
Clicking Twice in quick succession.