What it means
In Irish and UK slang, chronic is a quick, cutting way to say something's absolutely awful, useless, or gone properly to bits. You can sling it at buses, weather, a night out, your wifi, a date, whatever's been serving pure pain. It's not about illness here, it's just a blunt little verdict that means this is dire.
Usage examples
"The buses were chronic this morning, like. Waited half an hour, then three turned up together. I could’ve walked it and still had time for a tea."
"The film was chronic, we walked out halfway through and didn't even miss anything."
"My wifi's been chronic all week, drops out every time I join a call."
"That takeaway was chronic, mate. Chips were freezing and the curry looked like it'd lost the will to live."
"Tried booking a taxi after the gig and the whole app was chronic, kept crashing and charging me twice."