Green’s Dictionary of Slang

(orig. US) wide-spectrum term of approval, used of events, objects, individuals.

2016		Dly Pennsylvanian 23 Mar. 🌐 Here is a message I texted to my friend, while planning an outing to eat at Zesto’s Pizzeria: ‘Bruh this pizza is lit lets bounce fam’ Here is that sentence translated: ‘[Male friend] this pizza is [good] let’s [leave] [friend]’.
2019		Times Times2 3 June 3/1: Love Island: a handy glossary Lit Cool or awesome.
2020		G. Krauze What They Was 158: Those video shoots were fucking lit.
2021		Central Cee ‘6 for 6’ 🎵 Bad B’s, they curved the kid / Back then when I weren’t so lit, now I’m lit, they're pissed.