rusty
rus-ty
adjective
Covered in or affected by rust, a reddish-brown coating on metal.
"The old garden gate was rusty."
adjective
Less skilled or effective than before due to lack of recent practice.
"My French is a bit rusty."
Thesaurus
Synonyms: rust, chromatic, rust-brown, rusted, hoary, old, out of practice, unskilled