There are 15 words that start with 'begi'.
| begin | begins | begird |
| begirt | begirds | beginner |
| begirded | begirdle | beginners |
| beginning | begirding | begirdled |
| begirdles | beginnings | begirdling |
Note: These 15 words that start with 'begi' are found from the USA & Canada version of the tournament Scrabble word list.