There are 13 words that start with 'frigh'.
| fright | frights |
| frighted | frighten |
| frightens | frightful |
| frighting | frightened |
| frightening | frightfully |
| frighteningly | frightfulness |
| frightfulnesses | |
Note: These 13 words that start with 'frigh' are found from the USA & Canada version of the tournament Scrabble word list.