What it means
Muggy means sly, disrespectful, or out to make you look stupid. It’s the kind of behaviour that feels sneaky, cheeky in a bad way, or just low. If someone mugs you off, chats behind your back, or does a little shady move to embarrass you, that’s muggy.
Usage examples
"Man slid into my girl’s DMs while I’m sat right there, then acted innocent. That’s proper muggy, I’m not having it."
"That was a proper muggy move, eating my chips while I was in the loo and acting like nothing happened."
"He knew I was saving that seat, then brought his bredrin over and shrugged. That's muggy still."
"Don't smile in my face after that little stunt, that was muggy and you know it."
"Nah, borrowing my charger then bussing out the yard with it is muggy behaviour."
Where it comes from
It grows out of British slang mug, meaning a fool or someone getting taken for an idiot. From there, muggy came through as the adjective for sly, disrespectful behaviour that treats someone like a mug. It’s been around in London and wider UK street chat for years, especially in youth speech and MLE circles.
Other ways to say it
Editors of this term
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