British Blanche, Brights, Brought. Blunted, Theres more than that. Just go to a dictionary site and type 7 letter word starting w/ B
bibliography
because
that word will be BE EASY.
bucolic
boffo, bizarre
balcony
banquet
bibliography
Backrushes.
Ballerina is one 9-letter word beginning with B and ending with A.
Botany.
Bland.
berets
block
because
that word will be BE EASY.
broomstick