compactness
noun
compactness is spelled C-O-M-P-A-C-T-N-E-S-S: 11 letters and 3 syllables. It appears about once in every 5 million words in written English, the 65,913th most frequent word form (wordfreq, 2021 data). As a noun, compactness means “The state of being compact” (English Wiktionary, September 2026). The plural of compactness is compactnesses.
How many letters and syllables are in compactness?
| Letters | 11: C-O-M-P-A-C-T-N-E-S-S |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | about once in every 5 million words; the 65,913th 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 compactness?
Compactness appears about once in every 5 million words in written English, the 65,913th 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 compactness?
Compactness has 3 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-compactness.wav, Wikimedia Commons (author and licence on each file's page).
Forms of compactness
- compactnesses plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does compactness mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The state of being compact.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Compactness in Spanish, French, German and Portuguese
In the sense state of being compact:
| Language | Words |
|---|---|
| French | compacité |
| German | Kompaktheit |
| Spanish | compacidad |
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 compactness come from?
From compact + -ness.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).