There are 12 words that end with 'cysts'.
| cysts | encysts | oocysts |
| otocysts | cholecysts | macrocysts |
| sporocysts | statocysts | blastocysts |
| heterocysts | nematocysts | trichocysts |
Note: These 12 words that end with 'cysts' are found from the USA & Canada version of the tournament Scrabble word list.