There are 10 words that start with 'vain'.
| vain | vainer |
| vainly | vainest |
| vainness | vainglory |
| vainnesses | vainglories |
| vainglorious | vaingloriously |
Note: These 10 words that start with 'vain' are found from the USA & Canada version of the tournament Scrabble word list.