Strangeness is the quality of being unusual, unfamiliar, or difficult to explain. When you encounter something strange, it doesn't fit your normal expectations: a strangeness hangs in the air that makes you pause and wonder.

You might notice the strangeness of a new city when you visit for the first time, where the buildings look different, people speak with unfamiliar accents, and even the food seems unusual. There's a strangeness to dreams that makes them feel different from waking life, where logic doesn't quite work the way it should. A friendship might develop an uncomfortable strangeness after a serious argument, where conversations that used to feel natural now feel awkward and forced.

The word often suggests difference combined with a hint of mystery or mild discomfort, like when you walk into your classroom and sense something odd before you can identify what changed. Scientists use the word too: in physics, strangeness is a measurable property of certain subatomic particles, showing how the word can describe things that don't behave as expected.

What feels strange depends entirely on what you're used to. A custom that seems normal in one culture might have an air of strangeness to someone from another. As you experience more of the world, things that once seemed strange often become familiar, and the strangeness fades away.