There are 15 words that start with 'festi'.
| festive | festival |
| festinate | festivals |
| festively | festivity |
| festinated | festinates |
| festinately | festinating |
| festiveness | festivities |
| festivalgoer | festivalgoers |
| festivenesses | |
Note: These 15 words that start with 'festi' are found from the USA & Canada version of the tournament Scrabble word list.