There are 18 9-letter words that start with 'ble'.
| bleachers | bleaching | bleakness | 
| bleareyed | bleariest | blebbings | 
| bleedings | blemished | blemisher | 
| blemishes | blenchers | blenching | 
| blennioid | blesbucks | blesseder | 
| blessedly | blessings | blethered | 
Note: These 18 9-letter words that start with 'ble' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with blea, blen, bles, blee, blem, blet, bleb, blep, blel, bled, blew.
4-letter words start with 'ble' (4)