noun (used with a plural verb) Informal.
- boisterous celebration or merrymaking; unrestrained fun: The city is full of conventioneers indulging in their usual high jinks.
- lively enjoyment
also hi-jinks, high jinks, “boisterous capers, lively or boisterous sport,” 1842, from name of games played at drinking parties (1690s). Cf. jink.
Playful or rowdy activity, often involving mischievous pranks. For example, All sorts of high jinks go on at summer camp after “lights out.” About 1700 this term denoted a gambling game accompanied by much drinking, but by the mid-1800s it acquired its present meaning.