There are 13 words that end with 'tonias'.
| atonias | boltonias | dystonias |
| myotonias | amyotonias | catatonias |
| claytonias | clintonias | houstonias |
| hypotonias | vagotonias | hypertonias |
| rhizoctonias | ||
Note: These 13 words that end with 'tonias' are found from the USA & Canada version of the tournament Scrabble word list.