Word: rustproof
Part of speech: Adjective
Syllables: rust
proof
Definition: Resistant to rust, oxidation and corrosion.
Morphemes:
Affix: rust
Language: en
PoS: Verb
Meaning: To oxidize, especially of iron or steel.
Affix: -proof
Language: en
PoS: Suffix
Meaning: Used to form adjectives denoting an impervious or impenetrable quality.