There are 12 words that start with 'biga'.
| bigamy | bigamies | bigamist |
| bigamous | bigarade | bigaroon |
| bigamists | bigarades | bigaroons |
| bigarreau | bigamously | bigarreaus |
Note: These 12 words that start with 'biga' are found from the USA & Canada version of the tournament Scrabble word list.