Giggly describes someone who keeps breaking into light, bubbly laughter, often at things that might not even be that funny. When you're giggly, small things set you off: someone making a silly face, a strange word your teacher uses, or even nothing at all.

You might get giggly during a sleepover when you're tired and everything seems hilarious. Sometimes friends make each other giggly, where one person's laugh triggers everyone else's until the whole group is laughing. Teachers recognize the giggly mood that can sweep through a classroom when students are excited or restless.

Being giggly often happens when you're happy, tired, nervous, or trying hard to stay quiet (which somehow makes it worse). The feeling is contagious: when one person gets giggly, others usually catch it too. It's harder to control than regular laughter, bubbling up even when you're trying to be serious. After a giggly spell passes, your stomach might hurt from laughing and you may not even remember what started it all.