There are 9 words that end with 'thms'.
| rhythms | isarithms |
| algorithms | biorhythms |
| logarithms | polyrhythms |
| cologarithms | cryptarithms |
| antilogarithms | |
Note: These 9 words that end with 'thms' are found from the USA & Canada version of the tournament Scrabble word list.