rust

CEFRB2

/ɹʌst/

noun · verb

Türkçe translations

Translating…

In plain English

  1. 01

    noun

    A reddish coating formed on iron when exposed to water and air.

  2. 02

    verb

    To become covered with a reddish coating through water and air.

Examples

  • A bicycle will rust if you leave it in the rain.

  • Too much rest is rust.

At a glance

Sits at B2 on the CEFR scale

Senses
5
Parts of speech
2
Citations
3
Synonyms
2

Deep Dive

noun

Extra meanings

  1. A reddish-brown color.

  2. A similar substance based on another metal.

  3. 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).

More examples

In context

  • The patio furniture had rusted in the wind-driven spray.

  • The rust on my bicycle chain made cycling to work very dangerous.

  • Your gold and silver have rusted, and their rust will be evidence against you and will eat your flesh like fire.

Synonyms

Quick test

Two questions on this entry. Nothing is scored.

Question 1 · Quick check

When iron is left in the rain, it develops a red-brown coating called blank.

Practise this properly in the app, where the word comes back before you forget it.

Nearby

Origin

noun

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.