Skip to main content
PlainSpell

diarrhoea

noun

diarrhoea is spelled D-I-A-R-R-H-O-E-A: 9 letters and 4 syllables. It appears 1.0 times per million words in written English, the 28,214th most frequent word form (wordfreq, 2021 data). People search “diarrhea vs diarrhoea” about 110 times a month (Google, United States). As a noun, diarrhoea means “Alternative spelling of diarrhea” (English Wiktionary, September 2026). The plural of diarrhoea is diarrhoeas.

How many letters and syllables are in diarrhoea?

Letters9: D-I-A-R-R-H-O-E-A
Syllables4 (from its American pronunciation)
In writing1.0 times per million words; the 28,214th most frequent word form
Wrong spellings searchednone measured in search
Pairs people 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); Bing searches in the United States: the average month from September 2025 to August 2026 (Microsoft Advertising keyword data through DataForSEO, read September 30, 2026).

How common is diarrhoea?

Diarrhoea appears 1.0 times per million words in written English, the 28,214th 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 diarrhoea?

    Diarrhoea has 4 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).

    Words people confuse with diarrhoea

    Word pairs people search, with the monthly searches for “a vs b” (G: Google, B: Bing, United States).

    diarrhea vs diarrhoea110 G

    Also written: diarrhea.

    Sources: Google and Bing searches (September 2025 to August 2026, through DataForSEO); English Wiktionary (homophones, alternative spellings).

    Forms of diarrhoea

    • diarrhoeas plural

    Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

    What does diarrhoea mean?

    The meanings the English Wiktionary records, quoted as written there (source below).

    noun

    1. 1

      CommonwealthAlternative spelling of diarrhea.

    Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

    What to look up after diarrhoea