ajar, ajax
AjarAjeethose are the only ones i could find.
A four letter word starting with J is jump or joke.
Ajar
Some four letter words that start with J are:jokeJunejustjuryjailJoveJerkjumpjestjeerjunkjive
Ajuga (plants of the bugle family).
Two strange options:GyttjaRomaji
ninja banjo
There are no 4 letter words in the English language that begin with the letter L and end with the letter J.
jack
jade
Jack, Jade, Jaws!
June