There are 10 words that start with 'fatho'.
| fathom | fathoms |
| fathomed | fathomer |
| fathomers | fathoming |
| fathomable | fathomless |
| fathomlessly | fathomlessness |
Note: These 10 words that start with 'fatho' are found from the USA & Canada version of the tournament Scrabble word list.