Jaillir
to gush, spurt, spring, leap out / up
Jalonner
to mark off (a route); to line, stretch along; (figurative) to punctuate, mark
Jalouser
to be jealous of
Jardiner
to garden
Jaunir
to yellow, turn yellow
Jeter
to throw
Jeûner
to fast; to go hungry
Joindre
to join, to put together
Jouer
to play
Jouir
to enjoy, (familiar) to orgasm
Jucher
to perch
Juger
to judge, decide, consider
Jurer
to swear, vow
Justifier
to justify, bear out, prove, vindicate