Huh, you’re right. I checked the OED online (it’s a subscription thing through my library, here’s the link the OED “cite” button gives, let’s see if it’s paywalled:
Oxford English Dictionary, “jig (n.1), sense 5,” December 2025, https://doi.org/10.1093/OED/1036112357.)
edit: well, I’m not a fan of that. Here’s what it says, minus the examples
A piece of sport, a joke; a jesting matter, a trifle; a sportive trick or cheat. the jig is up (or the jig is over) = ‘the game is up’, it is all over. Now dialect or slang.
I thought it was “jig” like the dance, so the metaphorical dance is over
Seems it’s one of those definitions that only survives in a idiom:
https://www.etymonline.com/word/jig
Huh, you’re right. I checked the OED online (it’s a subscription thing through my library, here’s the link the OED “cite” button gives, let’s see if it’s paywalled: Oxford English Dictionary, “jig (n.1), sense 5,” December 2025, https://doi.org/10.1093/OED/1036112357.)
edit: well, I’m not a fan of that. Here’s what it says, minus the examples
No dice, paywalled
that’s a shame. I’ve edited the text into my comment above.
It actually does originate from that! But “jig” meaning “trick” is slang.