jabber v.#chatter rapidly or unintelligibly. Why does the fellow insist on jabbering away in French when I can't understand a word he says?#jaded adj.#fatigued; surfeited. He looked for exotic foods to stimulate his jaded appetite.#jargon n.#language used by a special group; technical terminology; gibberish. The computer salesmen at the store used a jargon of their own that we simply couldn't follow; we had no idea what they were jabbering about.#jaundiced adj.#prejudiced (envious, hostile or resentful); yellowed. Because Sue disliked Carolyn, she looked at Carolyn's paintings with a jaundiced eye, calling them formless smears. Newborn infants afflicted with jaundice look slightly yellow: they have jaundiced skin.#jaunt n.#trip; short journey. He took a quick jaunt to Atlantic City.#jaunty adj.#lighthearted; animated; easy and carefree. In An American in Paris, Gene Kelly sang and danced his way through "I Got Rhythm" in a properly jaunty style. #jeopardize v.#endanger; imperil; put at risk. You can't give me a D in chemistry: you'll jeopardize my chances of getting into M.I.T. jeopardy, n.#jettison v.#throw overboard. In order to enable the ship to ride safely through the storm, the captain had to jettison much of his cargo.#jingoist n.#extremely aggressive and militant patriot; warlike chauvinist. Always bellowing "America first!," the congressman was such a jingoist you could almost hear the sabers rattling as he marched down the halls. jingoism, n.#jocose adj.#given to joking. The salesman was so jocose that many of his customers suggested that he become a "stand-up" comic.#jocular adj.# said or done in jest. Although Bill knew the boss hated jokes, he couldn't resist making one jocular remark.#jollity n.#gaiety; cheerfulness. The festive Christmas dinner was a merry one, and old and young alike joined in the general jollity.#jostle v.#shove; bump. In the subway he was jostled by the crowds.#jovial adj.#good-natured; merry. A frown seemed out of place on his invariably jovial face.#jubilation n.#rejoicing. There was great jubilation when the armistice was announced. jubilant, adj. #judicious adj.#sound in judgment; wise. At a key moment in his life, he made a judicious investment that was the foundation of his later wealth.#juncture n.#crisis; joining point. At this critical juncture, let us think carefully before determining the course we shall follow.#junta n.#group of men joined in political intrigue; cabal. As soon as he learned of its existence, the dictator ordered the execution of all of the members of the junta.#jurisprudence n.#science of law. He was more a student of jurisprudence than a practitioner of the law.#justification n.#good or just reason; defense; excuse. The jury found him guilty of the more serious charge because they could see no possible justification for his actions.#