There are 16 words that start with 'oes'.
| oes | oestrin | oestrum |
| oestrus | oestrins | oestriol |
| oestrone | oestrous | oestrums |
| oesophagi | oestriols | oestrogen |
| oestrones | oestruses | oesophagus |
| oestrogens | ||
Note: These 16 words that start with 'oes' are found from the USA & Canada version of the tournament Scrabble word list.