Blasphemously is a long word. It begins with the letter b.
A 4 letter word that begins with B is bend.
antidiabetic
adenofibroma
Benumb is a 6 letter word. It means to make numb.
Ballerina is one 9-letter word beginning with B and ending with A.
Belated is a synonym for late. It begins with the letter b.
blurb
bah
blunt
Big dipper is an outer space word. Black hole is another outer space word that begins with the letter b.
Brother