Cranky means irritable or grumpy, like you’re one tiny annoyance away from snapping at the toaster. It’s what you get when you’re tired, hungry, hungover, or just sick of everyone’s noise. Not a heavy insult, more a soft warning to give someone space. Often said with a bit of affection, especially about kids or family.
"Don’t ask Mum about the bills, she’s cranky today. Missed lunch, traffic was chaos, and the internet keeps buffering like it’s doing a slow crawl."