Word.ws English Dictionary

rust

UK/ɹʌst/

More pronunciations (1)Fewer pronunciations

Northern England/ɹʊst/

rust noun: the deteriorated state of iron or steel as a result of moisture and oxidation; it consists mostly of iron(III) oxide (ferric oxide) and iron(II) oxide (ferrous oxide).

rust: the deteriorated state of iron or steel as a result of moisture and oxidation; it consists mostly...
Image: Roger McLassus, CC BY-SA 3.0, via Wikimedia Commons

Noun

rust (countable and uncountable, plural rusts)

  1. The deteriorated state of iron or steel as a result of moisture and oxidation; it consists mostly of iron(III) oxide (ferric oxide) and iron(II) oxide (ferrous oxide).
    • The rust on my bicycle chain made cycling to work very dangerous.
  2. A similar substance based on another metal.
    • copper rust
  3. A reddish-brown color.
  4. A disease of plants caused by a reddish-brown fungus (Pucciniales).
  5. Damage caused to stamps and album pages by a fungal infection.

Verb

rust (third-person singular simple present rusts, present participle rusting, simple past and past participle rusted)

  1. (intransitive) To oxidize, especially of iron or steel.
    • The patio furniture had rusted in the wind-driven spray.
    • Your gold and silver have rusted, and their rust will be evidence against you and will eat your flesh like fire.1946, International Council of Religious Education, The New Covenant, Commonly Called the New Testament of Our Lord and Savior Jesus Christ: Revised Standard Version, James 5:3, page 490
  2. (transitive) To cause to oxidize.
    • The wind-driven spray had thoroughly rusted the patio furniture.
  3. (intransitive) To be affected with the parasitic fungus called rust.
    • I am sorry to say that, contrary to the majority, I have to report that the forage rusted rather badly.1902 January 3, “Mapstone Oats: Further Experiences”, in The Agricultural Journal and Mining Record, volume 4, number 22, page 688
  4. (ambitransitive, figuratively) To (cause to) degenerate in idleness; to make or become dull or impaired by inaction.
    • My knowledge of Spanish has rusted over the years.
    • Must I rust in Egypt? never more / Appear in arms, and be the chief of Greece?1692, John Dryden, Cleomenes, the Spartan Hero, a Tragedy
  5. (intransitive) Of a black cat or its fur, to turn rust-coloured following long periods of exposure to sunlight.
    • It's very common for black cats to rust during the summer.

Proper noun (1) capitalized: Rust

Rust (countable and uncountable, plural Rusts)

  1. A surname.
  2. A township in Montmorency County, Michigan, United States.
  3. A municipality in Ortenaukreis, Baden-Württemberg, Germany.
  4. A small city in Burgenland, Austria.

Proper noun (2) capitalized: Rust

Rust

  1. A multiparadigm programming language focused on safety, especially safe concurrency.
    • In Rust, the compiler plays a gatekeeper role by refusing to compile code with these elusive bugs, including concurrency bugs.2019, Steve Klabnik, Carol Nichols, The Rust Programming Language, No Starch Press, →ISBN, page xxvi

rust meaning in Hindi, Tamil, Marathi and Urdu

rust in Hindi

result of oxidation
मोरचा morcā, जंग jaṅg, ज़ंग zaṅg

rust in Tamil

colour
செம்பழுப்பு cempaḻuppu
result of oxidation
துரு turu
to oxidise
துருப்பிடி turuppiṭi

rust in Marathi

rust
गंज gañja
to rust
गंजणे gañjṇe

rust in Urdu

result of oxidation
زنگ zang
More languagesFewer languages
rust in Bengali
জাম zam, জং joṅ
rust in Telugu
తుప్పు tuppu, త్రుప్పు truppu, తుప్పుపట్టు tuppupaṭṭu
rust in Malayalam
തുരുമ്പ് turumpŭ, തുരുമ്പിക്കുക turumpikkuka
rust in Kannada
ತುಕ್ಕು tukku
rust in Punjabi
ਜ਼ੰਗ zaṅg
rust in Gujarati
રસ્ટ
rust in Sanskrit
किट्ट kiṭṭa
rust in Assamese
মামৰ mamor, কঁহ kõh
rust in Nepali
खिया khiyā, खिया लाग्नु khiyā lāgnu, खिइनु khiinu
rust in Pashto
زنګ zang, مرچه morčá, مورچه murča
rust in Tagalog
kalawang
rust in Arabic
صَدَأ ṣadaʔ, صَدَّأَ ṣaddaʔa
rust in Malay
karat, tahi besi
rust in Indonesian
karat
rust in Persian
زنگ zang, زنگار zangâr, ژنگ žang
rust in Thai
สนิม sà-nǐm
rust in Vietnamese
rỉ sét, rỉ
rust in Myanmar
သံချေး samhkye:, သံချေးတက် samhkye:tak
Dhivehi
ދަބަރު dabaru, ދަބަރުޖެހުނ dabarujehun

Examples of rust in a sentence

  • Use a drill with a wire brush to remove any rust or buildup.
  • Iron turns into rust in the presence of air and water.
  • This treatment protects the under portion of the car from rust.

All 40 example sentences with rust

Synonyms of rust

Forms of rust

Noun
pluralrusts
Verb
third-person singular presentrusts
present participlerusting
past participlerusted
pastrusted
Proper noun
pluralRusts

Past tense of rust: rusted

Plural of rust: rusts

Origin of rust

From Middle English rust, rost, roust, from Old English rust, rūst (“rust”), from Proto-West Germanic *rust, from Proto-Germanic *rustaz (“rust”), from Proto-Indo-European *rudʰso- (“red”), from Proto-Indo-European *h₁rewdʰ- (“red”). Cognate with Scots roust (“rust”), Saterland Frisian rust (“rust”), West Frisian roast (“rust”), Dutch roest (“rust”), German Rost (“rust”), Danish rust (“rust”), Swedish rost (“rust”), Norwegian rust, ryst (“rust”), Finnish ruoste, Estonian rooste. Related to red.

From Middle English rusten, from the noun (see above).

* As an Alemannic German surname, from Rust * As a German surname, from Middle Low German ruste, from Old Saxon rasta, from Proto-West Germanic *rastu, from Proto-Germanic *rastō (“rest, pause”). * As an English and Scots surname, from Old English rust (“red, ruddy”), from Proto-Germanic *rustaz.

Words formed from rust

Phrases with rust

Words that rhyme with rust

25 more rhymesFewer rhymes

Questions about rust

What does rust mean?
Rust means the deteriorated state of iron or steel as a result of moisture and oxidation; it consists mostly of iron(III) oxide (ferric oxide) and iron(II) oxide (ferrous oxide).
What is rust in Hindi?
Rust in Hindi is मोरचा (morcā), जंग (jaṅg), ज़ंग (zaṅg). See Rust meaning in Hindi.
What part of speech is rust?
Rust can be a noun, a verb or a proper noun.
How do you pronounce rust?
Rust is pronounced /ɹʌst/ (UK).
What is the plural of rust?
The plural of rust is rusts.

Words near rust in the dictionary

  1. russulas
  2. russuloid
  3. russulone
  4. Russum
  5. Russums
  6. rust
  7. rust belt
  8. rust belts
  9. rust bucket
  10. rust buckets
  11. rust flies

Source and license

Adapted from Wiktionary: rust (page history and authors); Rust (page history and authors); गंज (Marathi) (page history and authors); জং (Bengali) (page history and authors); తుప్పు (Telugu) (page history and authors); ತುಕ್ಕು (Kannada) (page history and authors); ਜ਼ੰਗ (Punjabi) (page history and authors); rust (Gujarati, IndicTrans2 machine translation) (model and license). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-rust.ogg.

Cite this entry: “rust.” Word.ws, https://word.ws/rust. Based on Wiktionary, CC BY-SA 4.0.