There are 21 words that end with 'eths'.
eths | beths | heths |
meths | teths | cheths |
kheths | daleths | zibeths |
turbeths | turpeths | fortieths |
fiftieths | isopleths | sixtieths |
eightieths | ninetieths | thirtieths |
twentieths | seventieths | shibboleths |
Note: These 21 words that end with 'eths' are found from the USA & Canada version of the tournament Scrabble word list.