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.