rust
Definitions
A reddish-brown flaky coating of iron oxide that forms on iron or steel by oxidation.
A plant disease caused by a fungus, characterized by reddish-brown spots on leaves and stems.
A state of deterioration or decline resulting from disuse or inactivity.
Examples
The old bicycle was covered in rust after being left out in the rain for years.
If you do not paint the metal gate, it will eventually succumb to rust.
My tennis skills have started to rust since I stopped playing regularly.
Synonyms
Antonyms
polish shine gleam preservation protection renovation restoration