| JACKSMELT | • jacksmelt n. Atherinopsis californiensis, an edible neotropical silverside native to the Pacific coast of North America. • JACKSMELT n. a large fish of the Pacific coast of North America. |
| JACULATES | • jaculates v. Third-person singular simple present indicative form of jaculate. • JACULATE v. to throw or cast, as a dart. |
| JANGLIEST | • jangliest adj. Superlative form of jangly: most jangly. • JANGLY adj. making a jangling sound. |
| JASPILITE | • jaspilite n. (Mineralogy) A compact siliceous rock resembling jasper. • JASPILITE n. a rock like jasper. |
| JELUTONGS | • jelutongs n. Plural of jelutong. • JELUTONG n. (Malay) a naturally occurring rubberlike substance, aka pontianak. |
| JESTINGLY | • jestingly adv. In jest; jokingly. • JESTINGLY adv. JESTING. |
| JETLINERS | • jetliners n. Plural of jetliner. • jet-liners n. Plural of jet-liner. • jet␣liners n. Alternative form of jetliners plural of jet liner. |
| JIGGLIEST | • jiggliest adj. Superlative form of jiggly: most jiggly. • JIGGLY adj. given to jiggling. |
| JINGLIEST | • jingliest adj. Superlative form of jingly: most jingly. • JINGLY adj. jingling. |
| JOINTLESS | • jointless adj. Without joints; unjointed. • JOINTLESS adj. without joints. |
| JOLLITIES | • jollities n. Plural of jollity. • JOLLITY n. mirth. |
| JOLTHEADS | • joltheads n. Plural of jolthead. • JOLTHEAD n. (archaic) a clumsy oaf, a blockhead, also JOLTERHEAD. |
| JUBILATES | • jubilates v. Third-person singular simple present indicative form of jubilate. • JUBILATE v. to rejoice. |
| JUGULATES | • jugulates v. Third-person singular simple present indicative form of jugulate. • JUGULATE v. to cut the throat of. |
| JUMBLIEST | • JUMBLY adj. in a jumble. |
| JUNGLIEST | • jungliest adj. Superlative form of jungly: most jungly. • JUNGLY adj. of or relating to jungles. |
| PULSEJETS | • pulsejets n. Plural of pulsejet. • pulse␣jets n. Plural of pulse jet. • PULSEJET n. in jet propulsion, an intermittent jet, also PULSOJET. |
| PULSOJETS | • pulsojets n. Plural of pulsojet. • PULSOJET n. in jet propulsion, an intermittent jet, also PULSEJET. |
| RIJSTAFEL | • rijstafel n. Alternative spelling of rijsttafel. • RIJSTAFEL n. (Dutch) an Indonesian rice dish, also REISTAFEL, RIJSTTAFEL. |