jade
a semiprecious gemstone that takes a high polish; is usually green but sometimes whitish; consists of jadeite or nephrite
jabberwocky
nonsensical language (according to Lewis Carroll)
jargon
specialized technical terminology characteristic of a particular subject
jaundiced
affected by jaundice which causes yellowing of skin etc
jeer
laugh at with contempt and derision
jejune
lacking interest or significance or impact
jest
activity characterized by good humor
jilt
cast aside capriciously or unfeelingly
jocular
characterized by jokes and good humor
jostle
make one's way by jostling, pushing, or shoving
journeyman
a skilled worker who practices some trade or handicraft
joust
joust against somebody in a tournament by fighting on horseback
jubilant
full of high-spirited delight
judicious
marked by the exercise of good judgment or common sense in practical matters
juggernaut
a massive inexorable force that seems to crush everything in its way
jugular
relating to or located in the region of the neck or throat
juncture
the shape or manner in which things come together and a connection is made
junta
a group of military officers who rule a country after seizing power
jurisdiction
in law; the territory within which power can be exercised
jurisprudence
the branch of philosophy concerned with the law and the principles that lead courts to make the decisions they do
justify
show to be right by providing justification or proof
juvenescence
the process of growing into a youth