Rustproof

adj, verb

adj, verb ·2 syllables ·Rare ·Advanced level

Definitions

Verb
  1. 1
    To make resistant to rust, such as by applying a coating.

    "We'll rustproof the metal with a good coat of paint and then we'll be able to leave it outdoors for years without damage."

Adjective
  1. 1
    Resistant to rust, oxidation and corrosion.

    "This is supposed to be a rustproof trashcan, but it can't handle the salt they use on our roads."

  2. 2
    Resistant to the rust fungus.
Adjective
  1. 1
    treated against rusting wordnet

Synonyms

All synonyms
airtightfireproofflameprooffoolproofhermeticimpervious

Example

More examples

"This is supposed to be a rustproof trashcan, but it can't handle the salt they use on our roads."

Etymology

From rust + -proof.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.