There are 16 13-letter words that end with 'esis'.
Note: These 16 13-letter words that end with 'esis' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with nesis, hesis, resis, iesis, mesis, desis, gesis, cesis, lesis, tesis, yesis, eesis, kesis, oesis, pesis, xesis, zesis.
6-letter words end with 'esis' (7)