rusty
adjective
[ ˈrʌsti ]
• (of a metal object) affected by rust.
• "a rusty hinge"
Similar:
rusted,
rust-covered,
corroded,
oxidized,
tarnished,
discoloured,
aeruginous,
• (of knowledge or a skill) impaired by lack of recent practice.
• "my typing is a little rusty"
Origin:
Old English rūstig (see rust, -y1).