There are 13 words that start with 'etho'.
| ethos | ethoxy | ethoses |
| ethoxyl | ethogram | ethology |
| ethoxies | ethoxyls | ethograms |
| ethologies | ethologist | ethological |
| ethologists | ||
Note: These 13 words that start with 'etho' are found from the USA & Canada version of the tournament Scrabble word list.