There are 18 words that end with 'thal'.
| lethal | withal | benthal |
| canthal | gnathal | spathal |
| unlethal | zenithal | azimuthal |
| betrothal | alecithal | bismuthal |
| nonlethal | sublethal | bequeathal |
| semilethal | therewithal | wherewithal |
Note: These 18 words that end with 'thal' are found from the USA & Canada version of the tournament Scrabble word list.