There are 12 words that end with 'rheas'.
| rheas | diarrheas |
| pyorrheas | gonorrheas |
| menorrheas | logorrheas |
| seborrheas | amenorrheas |
| leukorrheas | steatorrheas |
| dysmenorrheas | galactorrheas |
Note: These 12 words that end with 'rheas' are found from the USA & Canada version of the tournament Scrabble word list.