somnambulism
/sɒmˈnæmbjʊlɪzəm/noun
somnambulism is spelled S-O-M-N-A-M-B-U-L-I-S-M: 12 letters. It appears about once in every 32 million words in written English, the 171,907th most frequent word form (wordfreq, 2021 data). As a noun, somnambulism means “sleepwalking” (English Wiktionary, September 2026). The plural of somnambulism is somnambulisms.
How many letters and syllables are in somnambulism?
| Letters | 12: S-O-M-N-A-M-B-U-L-I-S-M |
|---|---|
| In writing | about once in every 32 million words; the 171,907th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is somnambulism?
Somnambulism appears about once in every 32 million words in written English, the 171,907th 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 somnambulism?
- /sɒmˈnæmbjʊlɪzəm/
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Paul2520-somnambulism.wav, Wikimedia Commons (author and licence on each file's page).
Forms of somnambulism
- somnambulisms plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does somnambulism mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
sleepwalking
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Somnambulism in Spanish, French, German and Portuguese
In the sense sleepwalking:
| Language | Words |
|---|---|
| French | somnambulisme |
| German | Schlafwandeln, Somnambulismus, Somnambulie |
| Portuguese | sonambulismo |
| Spanish | sonambulismo, somnambulismo |
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 somnambulism come from?
From French somnambulisme, from New Latin somnambulus, from Latin somnus (“sleep”) + ambulō (“to walk”), + -ism.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).