There are 16 words that start with 'vai'.
| vail | vain |
| vair | vails |
| vairs | vailed |
| vainer | vainly |
| vailing | vainest |
| vainness | vainglory |
| vainnesses | vainglories |
| vainglorious | vaingloriously |
Note: These 16 words that start with 'vai' are found from the USA & Canada version of the tournament Scrabble word list.