When something is blurry, you can see it but you can't see it clearly or sharply. The details are fuzzy and run together, like looking at a photograph that's out of focus or trying to read without your glasses if you need them.

Think about how the world looks when you first wake up and your eyes haven't adjusted yet, or how things look through a foggy window. That's blurriness. When you take a photo of something moving fast, like your dog running across the yard, the image might come out blurry because the camera couldn't capture the motion crisply.

Your vision gets blurry when you're very tired, when you've been swimming and water gets in your eyes, or when you've been staring at a screen for too long. Objects in the distance might look blurry until you get closer. Artists sometimes blur parts of a painting on purpose to create a dreamy effect or to make other parts stand out more clearly.

The word can also describe unclear thinking. If the details of a memory are blurry, you remember something happened but you can't recall it precisely. When the difference between two ideas gets blurry, they start to seem too similar to tell apart.