同義詞
1. (of a metal object) affected by rust
2. rust-coloured
- reddish-brown
- , chestnut
- , auburn
- , tawny
- , russet
- , coppery
- , copper
- , Titian
- , rust-coloured
- , reddish
- , rufous
- , brick-red
- , brick
- , rufescent
3. (of knowledge or a skill) impaired by lack of recent practice