| JACULATOR | • jaculator n. One who throws or casts. • jaculator n. (Zoology) The archerfish. • JACULATOR n. one who throws or casts. |
| JELUTONGS | • jelutongs n. Plural of jelutong. • JELUTONG n. (Malay) a naturally occurring rubberlike substance, aka pontianak. |
| JILLIONTH | • jillionth adj. The ordinal form of the number jillion. • JILLIONTH adj. the ordinal of jillion. |
| JOCKTELEG | • jockteleg n. (Scotland, archaic) A folding knife. • JOCKTELEG n. (Scots) a large clasp knife. |
| JOCULATOR | • joculator n. (Obsolete) A jester; a joker. • Joculator prop.n. A taxonomic genus within the family Cerithiopsidae – ceratin sea snails. • JOCULATOR n. a professional jester or minstrel. |
| JOINTEDLY | • jointedly adv. In a jointed way; with, or by means of, joints. • JOINTED adv. JOINT, to fit together by means of a junction. |
| JOINTLESS | • jointless adj. Without joints; unjointed. • JOINTLESS adj. without joints. |
| JOLIOTIUM | • joliotium n. (Chemistry, obsolete) A rejected name for dubnium. • joliotium n. (Chemistry, obsolete) A rejected name for nobelium. • JOLIOTIUM n. a former name for the element dubnium. |
| JOLLIMENT | • jolliment n. (Obsolete) jollity. • JOLLIMENT n. (Spenser) jollity. |
| JOLLITIES | • jollities n. Plural of jollity. • JOLLITY n. mirth. |
| JOLLYBOAT | • jollyboat n. Alternative form of jolly boat. • jolly␣boat n. A type of ship’s boat of the 17th to 19th centuries, used mainly to ferry personnel to and from the ship. • JOLLYBOAT n. a small boat kept hoisted at a ship's stern. |
| JOLTHEADS | • joltheads n. Plural of jolthead. • JOLTHEAD n. (archaic) a clumsy oaf, a blockhead, also JOLTERHEAD. |
| JOLTINGLY | • joltingly adv. In a jolting way; with abrupt, uneven shakes or knocks. • JOLTINGLY adv. JOLTING. |
| JOSTLINGS | • jostlings n. Plural of jostling. • JOSTLING n. the act of jostling. |
| JOVIALITY | • joviality n. The state of being jovial; jollity or conviviality. • JOVIALITY n. the state of being jovial, also JOVIALTY. |
| OUTJUGGLE | • outjuggle v. (Transitive) To surpass in juggling. • OUTJUGGLE v. to surpass at juggling. |
| PULSOJETS | • pulsojets n. Plural of pulsojet. • PULSOJET n. in jet propulsion, an intermittent jet, also PULSEJET. |