There are 18 words that start with 'annul'.
| annul | annuli | annuls |
| annular | annulet | annulus |
| annulate | annulets | annulled |
| annulose | annularly | annulated |
| annulling | annulment | annuluses |
| annulation | annulments | annulations |
Note: These 18 words that start with 'annul' are found from the USA & Canada version of the tournament Scrabble word list.