Glitchy describes something that has frequent small problems or malfunctions, especially in technology. When your video game character suddenly freezes mid-jump or teleports through a wall, that's glitchy behavior. When a video call keeps cutting out or your cursor jumps around the screen, the software is acting glitchy.

The word comes from glitch, which means a temporary malfunction or unexpected problem. Think of a glitch as a hiccup in how something is supposed to work: not a complete breakdown, but an annoying interruption or strange behavior that makes things harder to use.

Something glitchy might work fine most of the time but have these unpredictable moments of weirdness. A glitchy app might crash randomly. A glitchy microphone might cut in and out during a presentation. Glitchy electronics might flicker, freeze, or do unexpected things.

People sometimes use glitchy more broadly to describe anything that feels unreliable or unpredictable, even outside technology. You might say someone seems glitchy if they keep forgetting things or acting strangely, though this usage is informal and can come across as unkind, so it's best used carefully.