barn, bark, bank and many more, try a dictionary website
A 4 letter word that begins with B is bend.
Blasphemously is a long word. It begins with the letter b.
Baron
antidiabetic
adenofibroma
Ballerina is one 9-letter word beginning with B and ending with A.
Benumb is a 6 letter word. It means to make numb.
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.