There are 12 words that start with 'vexill'.
| vexilla | vexillar | 
| vexillum | vexillary | 
| vexillate | vexillaries | 
| vexillology | vexillologic | 
| vexillologies | vexillologist | 
| vexillological | vexillologists | 
Note: These 12 words that start with 'vexill' are found from the USA & Canada version of the tournament Scrabble word list.