1. (noun) rust
a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture
Synonyms: rust fungus, rusting
Antonyms: neutral, achromatic
2. (noun) rust
a plant disease that produces a reddish-brown discoloration of leaves and stems; caused by various rust fungi
Synonyms: rust fungus, rusting
Antonyms: achromatic, neutral
3. (noun) rust, rusting
the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water
Synonyms: rust, rust fungus, rusting
Antonyms: neutral, achromatic
4. (adj) rust, rust fungus
any of various fungi causing rust disease in plants
Synonyms: rust, rust fungus, rusting
Antonyms: achromatic, neutral
5. (verb) rust, rusty, rust-brown
of the brown color of rust
Synonyms: rust, hoary, rusty, out of practice(p), rust-brown
Antonyms: neutral, achromatic
6. (verb) corrode, rust
become destroyed by water, air, or a corrosive such as an acid
Synonyms: corrode, rust, eat
Antonyms: neutral, achromatic
7. (verb) corrode, eat, rust
cause to deteriorate due to the action of water, air, or an acid
Synonyms: eat up, wipe out, deplete, use up, eat, feed, corrode, consume, exhaust, rust, run through, eat on
Antonyms: neutral, achromatic
8. (verb) rust
become coated with oxide
Synonyms: corrode, eat
Antonyms: neutral, achromatic
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Synonyms for rust 
