There are 16 words that start with 'goni'.
| gonia | gonif | goniff |
| gonifs | gonion | gonium |
| gonidia | gonidic | goniffs |
| gonidial | gonidium | goniometer |
| goniometry | goniometers | goniometric |
| goniometries | ||
Note: These 16 words that start with 'goni' are found from the USA & Canada version of the tournament Scrabble word list.