Unclear means difficult to understand or see. When your teacher's handwriting is unclear, you can't read what's written on the board. When instructions are unclear, you're not sure what steps to follow or what you're supposed to do next.

Something can be physically unclear, like a blurry photograph where you can't make out people's faces, or a window so dirty that you can barely see through it. Or it can be mentally unclear, like when someone gives you directions that leave you confused about which way to turn.

The word also describes uncertainty about what will happen. If the weather forecast says conditions are unclear, meteorologists aren't sure whether it will rain or stay sunny. When the outcome of a close game is unclear, no one knows yet who will win.

Notice how unclear often signals that you need more information or a better view. A science experiment might produce unclear results that don't point to any definite conclusion. A garbled phone connection might make someone's words unclear. When something important is unclear, people may need to ask questions, look closer, or wait for better information rather than guessing and possibly getting it wrong.