Deteriorate is like when your favorite toy starts to change over time. Imagine your toy car used to zoom super fast, but now it has a wobbly wheel and doesn’t go as smoothly. The toy is slowly getting worn out, losing its shiny paint, and becoming less fun to play with. This is because it’s getting older and not as strong as before.
Think of a banana. When it’s fresh, it’s yellow and yummy. But if you leave it out for too long, it turns brown and mushy. It’s not as tasty anymore because it’s starting to spoil. That’s how things can deteriorate, by becoming less nice or useful over time.
Or consider a castle made of sand at the beach. When you first build it, it’s tall and grand. But as the waves come in and the wind blows, the castle starts to crumble and lose its shape. The sand castle is deteriorating because the water and wind are wearing it away. So, when something deteriorates, it means it’s slowly breaking down or not working like it used to.