jinks

"Jinks" is an old-fashioned, lively word for playful mischief, noisy fun, or silly behavior that causes a bit of harmless trouble. It usually points to actions rather than a single act: a run of pranks, rough play, or cheerful disorder. The tone is often amused rather than angry, which is why the word fits children, pranksters, party scenes, or comic characters so well.

Most people now meet the word in set phrases such as "high jinks" and "old jinks." "High jinks" usually means rowdy, excited fun, often in a group. "Old jinks" suggests familiar tricks or the same mischievous behavior someone is known for. If a novel says the boys were up to their old jinks again, it means they were likely laughing, running about, and causing mild chaos in the way they always do.

The word should not be confused with "jinx," which is about bad luck. "Jinks" is about behavior, energy, and mischief. It is also less common in everyday modern speech than words like "antics" or "pranks," so it often adds a slightly literary or vintage feel. In the right setting, though, it paints a vivid picture of people having spirited fun and making just enough trouble to be memorable.