joccund
joules
Jerk
Jaw
jonquil
Jovial jewel
Jaunt.
Jovial
Joy, Joyfully
jab jack jade
Java
There are no words in the English language that begin and end with the letter j.
Some 5-letter words beginning with 'j' are:jabotjauntjazzyjeansjellyjennyjettyjeweljiffyjimmyjointjoistjokerjollyjoulejoustjowlyjudgejuicejuicyjulepjumbojumpyjunkyjuror