Bee, butterfly, beautiful, beauty, big, belly, bug, boring, brick, brass, bass, bad etc
Biotechnological
ballistic
Bingo
bicarbonate
bibliography
Belated is a synonym for late. It begins with the letter b.
Some seven letter words starting with B are:bathtubdisturbperturbproverbrhubarbsuccumbtaxicabwashtub
bighug
bed
Beer
brought
Biology