· joyful
· just
There is no English word that starts with you and ends with J.
A four letter word starting with J is jump or joke.
A word that starts with TA and includes a J is Taj Mahal.
Jellybeans are good. They begin with the letter j.
Jeepers
joust
JunkJambJustJoinJail
jump
joule
java
Reenact. -J
junta, jelly, joust