# tarnish

/ˈtɑɹnɪʃ/ (US) · /tˈɑːnɪʃ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/tarnish
Updated: 2026-05-20

## Definition

a thin layer of dark stuff that covers a metal surface and makes it look dull. It is usually caused by air or water.

For teachers: a thin layer of oxide or other substance that forms on a metal surface, causing it to lose its luster. Often used in the context of silver or gold.

## Examples

- The silver spoon has a thin layer of tarnish.
- To keep your jewelry looking bright, you should clean it regularly to prevent tarnish from building up.
- The antique silverware was carefully polished to remove centuries of tarnish, revealing the intricate patterns that had been hidden beneath the darkened surface.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.