There are 14 words that start with 'belli'.
| bellied | bellies | 
| belling | bellings | 
| bellicose | bellicosity | 
| belligerent | belligerence | 
| belligerency | belligerents | 
| bellicosities | belligerences | 
| belligerently | belligerencies | 
Note: These 14 words that start with 'belli' are found from the USA & Canada version of the tournament Scrabble word list.