There are 14 words that start with 'billi'.
| billie | billies |
| billing | billion |
| billiard | billings |
| billions | billiards |
| billionth | billionths |
| billionaire | billingsgate |
| billionaires | billingsgates |
Note: These 14 words that start with 'billi' are found from the USA & Canada version of the tournament Scrabble word list.