Unchanged means staying exactly the same, without any differences or modifications. When something remains unchanged, it hasn't been altered, adjusted, or transformed in any way.

Think about a recipe your grandmother has used for decades: if it's unchanged, she's still using the exact same ingredients and measurements she always has. When a school's dress code stays unchanged from one year to the next, students follow the same rules they did before. When you return to your childhood home after vacation and find your room unchanged, everything is right where you left it.

The word often appears when people expect something to be different but discover it isn't. A scientist might observe that a specimen remains unchanged after exposure to heat, meaning it looks and behaves exactly as it did before. A character in a story might return home after years away to find the town completely unchanged, with the same buildings, same people, and same routines.

Unchanged can describe physical things (an unchanged landscape), ideas (an unchanged opinion), or situations (an unchanged friendship). The word emphasizes continuity and consistency: whatever was true before is still true now.