mouthwash
noun, verb
mouthwash is spelled M-O-U-T-H-W-A-S-H: 9 letters and 2 syllables. It appears about once in every 2 million words in written English, the 41,154th most frequent word form (wordfreq, 2021 data). As a noun, mouthwash means “A liquid used to clean one's mouth” (English Wiktionary, September 2026). The plural of mouthwash is mouthwashes.
How many letters and syllables are in mouthwash?
| Letters | 9: M-O-U-T-H-W-A-S-H |
|---|---|
| Syllables | 2 (from its American pronunciation) |
| In writing | about once in every 2 million words; the 41,154th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is mouthwash?
Mouthwash appears about once in every 2 million words in written English, the 41,154th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce mouthwash?
Mouthwash has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-mouthwash.wav, Wikimedia Commons (author and licence on each file's page).
Words people confuse with mouthwash
Also written: mouth wash (one word or two).
Sources: English Wiktionary (homophones, alternative spellings).
Forms of mouthwash
- mouthwashes plural, present, singular, he/she/it
- mouth wash
- mouthwashing participle, present
- mouthwashed participle, past
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does mouthwash mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
A liquid used to clean one's mouth.
verb
- 1
To clean one's mouth with mouthwash.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Mouthwash in Spanish, French, German and Portuguese
In the sense liquid used to clean one's mouth:
| Language | Words |
|---|---|
| French | bain de bouche, gargarisme, rince-bouche |
| German | Mundspülung, Mundwasser, Gurgelwasser |
| Portuguese | enxaguante bucal, enxágue bucal |
| Spanish | colutorio, enjuague bucal |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does mouthwash come from?
From mouth + wash.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).