Jaguar is one.
Jaffa :-)
That would be a juniper tree.
Jason priestly
Jensen
Jupiter
Jolly
A couple words beginning with the letter J describing a nice lady would be such examples as "jovial" and "jubilant."
Jolly and joyful are positive words.
Jack, jade, jazz.
jerk joke
jugular vien
Jet Just
haj hajj
There are no words in the English language that begin and end with the letter j.
je, jeudi, jarre, jolie, joie, jouet are French words beginning by J.
Some 5-letter words beginning with 'j' are:jabotjauntjazzyjeansjellyjennyjettyjeweljiffyjimmyjointjoistjokerjollyjoulejoustjowlyjudgejuicejuicyjulepjumbojumpyjunkyjuror