There are 18 words that start with 'bent'.
| bent | bento | bents | 
| bentos | benthal | benthic | 
| benthon | benthos | benthons | 
| bentwood | bentgrass | benthonic | 
| benthoses | bentonite | bentwoods | 
| bentonites | bentonitic | bentgrasses | 
Note: These 18 words that start with 'bent' are found from the USA & Canada version of the tournament Scrabble word list.