| AMBERJACKS | • amberjacks n. Plural of amberjack. • AMBERJACK n. a large Atlantic gamefish having golden markings when young. |
| CARJACKERS | • carjackers n. Plural of carjacker. • CARJACKER n. one who steals cars by holding up their owners and demanding the keys. |
| JACKASSERY | • jackassery n. The foolish or obnoxious behaviour of a jackass. • JACKASSERY n. being a jackass. |
| JACKSCREWS | • jackscrews n. Plural of jackscrew. • jack␣screws n. Plural of jack screw. • JACKSCREW n. a jack in which a screw is used for lifting, or exerting pressure. |
| JAILBREAKS | • jailbreaks n. Plural of jailbreak. • jailbreaks v. Third-person singular simple present indicative form of jailbreak. • jail␣breaks n. Plural of jail break. |
| JAYHAWKERS | • jayhawkers n. Plural of jayhawker. • JAYHAWKER n. a name given to a freebooting, un-enlisted, armed man or guerrilla in the American Civil War. |
| JAYWALKERS | • jaywalkers n. Plural of jaywalker. • jay-walkers n. Plural of jay-walker (alternative spelling of jaywalkers). • JAYWALKER n. one who walks in the road rather than on the pavement. |
| JERKWATERS | • jerkwaters n. Plural of jerkwater. • jerk-waters n. Plural of jerk-water. • JERKWATER n. a train on a branch line. |
| JOBSEEKERS | • jobseekers n. Plural of jobseeker. • JOBSEEKER n. one engaged in seeking employment. |
| JUNKERDOMS | • JUNKERDOM n. the office of junker. |
| JUNKETEERS | • junketeers n. Plural of junketeer. • junketeers v. Third-person singular simple present indicative form of junketeer. • JUNKETEER n. one who junkets, feasts, also JUNKETER, JUNKETTER. |
| JUNKETTERS | • JUNKETTER n. one who junkets, feasts, also JUNKETEER, JUNKETER. |
| SKIJUMPERS | • ski␣jumpers n. Plural of ski jumper. • SKIJUMPER n. one who engages in the sport of ski-jumping. |
| SKIKJORERS | • SKIKJORER n. one who engages in the sport of skijoring, also SKIJORER, SKIORER. |
| SKYJACKERS | • skyjackers n. Plural of skyjacker. • SKYJACKER n. one who skyjacks, hijacks an aeroplane. |
| SUPERJOCKS | • superjocks n. Plural of superjock. • SUPERJOCK n. a very good athlete. |