# mouthwash

/ˈmaʊθˌwɑʃ/ (US) · /mˈaʊθwɒʃ/ (UK) · CEFR B1 · Noun

Source: https://englishreference.com/word/mouthwash
Updated: 2026-05-30

## Definition

a liquid you rinse in your mouth to keep it clean and fresh. It helps kill bacteria and can make your breath smell better.

For teachers: a liquid used for rinsing the oral cavity to reduce bacteria, freshen breath, or treat specific dental conditions. Often contains antiseptic or fluoride agents.

## Examples

- He uses mouthwash every night after brushing his teeth.
- The dentist recommended a specific brand of mouthwash to help manage the patient's gum inflammation.
- While regular brushing removes plaque, mouthwash serves as an essential adjunct to the daily hygiene routine by reaching areas that a toothbrush cannot effectively clean.

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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.