There are 5 15-letter words that end with 'tises'.
| cholecystitises | enterocolitises |
| lymphadenitises | osteomyelitises |
| tenosynovitises | |
Note: These 5 15-letter words that end with 'tises' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with itises, atises, etises, rtises, otises, stises, ttises, utises, ytises, ctises, ntises, ptises.
7-letter words end with 'tises' (3)