JACK a mean fellow
JACK-A-LENT a puppet thrown at in Lent
JACK GUARDANT a jack in office
JADE to whip, to treat with contempt
JAR the ticking of a clock
JAR to tick as a clock
JAUNCE to prance
JESS a strap of leather attached to the talons of a hawk, by which it is held on the fist
JEST to tilt in a tournament
JET to strut
JOURNAL daily
JOVIAL appertaining to Jove
JUDICIOUS critical
JUMP to agree to hazard
JUMP hazard
JUMP exactly, nicely
JUSTICER a judge, magistrate
JUT to encroach
JUTTY a projection
JUTTY to jut out beyond
JUVENAL youth, young man