English Reference

Word

stainless

Phoneticsstain·less, stress on the first syllable

US/ˈsteɪnɫəs/

UK/stˈeɪnləs/

Definitions

01metal that does not rust

B2 · Upper Intermediate Science

adj. made of a special metal that does not rust or get stained easily.

adj. describing a steel alloy containing chromium that is resistant to rusting, corrosion, and staining.

“We bought a new stainless steel sink for the kitchen renovation.”

“The architect specified stainless steel cladding for the exterior to ensure the building maintained its appearance despite the salty coastal air.”

Synonyms

rust-resistantcorrosion-proof

Antonyms

corrodible

02morally pure

C1 · Advanced Literary · Formal

adj. having a perfect reputation or being free from any moral mistakes.

adj. free from moral blemish or sin; possessing an unspotted reputation.

“After twenty years in politics, he still has a stainless reputation.”

“The candidate presented himself as a man of stainless character, though his opponents worked tirelessly to find any past indiscretion.”

Antonyms

03stainless steel items

B2 · Upper Intermediate Plural noun Cooking

n. knives, forks, and spoons made from stainless steel.

n. a collective term for cutlery or kitchenware manufactured from stainless steel alloys.

“She polished the stainless until it shone like a mirror.”

“The restaurant invested in high-quality stainless for the dining room to reduce the long-term costs of replacing damaged silverware.”

Collocations

Common phrases and expressions where native English speakers use the word “stainless” in context.

01. stainless steel

Real-World Examples

“Unless you want to shell out for the Vitamix Stainless Steel container ($250) , this is the best blender you can buy that’s made with glass.”
The Guardian 2 Oct 2026
“Tesco also said sales of its stainless steel colanders rose by more than 130% week on week, while sales of its plastic versions rose 13%.”
The Guardian 13 Aug 2026
“Results from the stainless steel Ilsa Turbo Express were drinkable, if somewhat hollow and flat, and brews from the Grosche Milano Red were the worst — watery and flavorless.”
The New York Times 8 Jan 2026

Etymology

From stain + -less.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

stainless(B2)

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Frequent
Level
B2 · Upper Intermediate
Updated

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English Reference