jargon – Confused, unintelligible speech or highly technical speech.
jaundice – A morbid condition, due to obstructed excretion of bile or characterized by yellowing of the skin.
jeopardize – To imperil.
Jingo – One of a party in Great Britain in favor of spirited and demonstrative foreign policy.
jocose – Done or made in jest.
jocular – Inclined to joke.
joggle – A sudden irregular shake or a push causing such a shake.
journalize – To keep a diary.
jovial – Merry.
jubilation – Exultation.
judgment – The faculty by the exercise of which a deliberate conclusion is reached.
judicature – Distribution and administration of justice by trial and judgment.
judicial – Pertaining to the administration of justice.
judiciary – That department of government which administers the law relating to civil and criminal justice.
judicious – Prudent.
juggle – To play tricks of sleight of hand.
jugglery – The art or practice of sleight of hand.
jugular – Pertaining to the throat.
juicy – Succulent.
junction – The condition of being joined.
juncture – An articulation, joint, or seam.
junta – A council or assembly that deliberates in secret upon the affairs of government.
juridical – Assumed by law to exist.
jurisdiction – Lawful power or right to exercise official authority.
jurisprudence – The science of rights in accordance with positive law.
juror – One who serves on a jury or is sworn in for jury duty in a court of justice.
joust – To engage in a tilt with lances on horseback.
justification – Vindication.
juvenile – Characteristic of youth.
juxtapose – To place close together.