robustness
noun
robustness is spelled R-O-B-U-S-T-N-E-S-S: 10 letters and 3 syllables. It appears about once in every 1 million words in written English, the 35,748th most frequent word form (wordfreq, 2021 data). As a noun, robustness means “The quality of being robust” (English Wiktionary, September 2026). The plural of robustness is robustnesses.
How many letters and syllables are in robustness?
| Letters | 10: R-O-B-U-S-T-N-E-S-S |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | about once in every 1 million words; the 35,748th 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 robustness?
Robustness appears about once in every 1 million words in written English, the 35,748th 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 robustness?
Robustness 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).
Forms of robustness
- robustnesses plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does robustness mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
The quality of being robust.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Robustness in Spanish, French, German and Portuguese
In the sense quality of being robust:
| Language | Words |
|---|---|
| French | robustesse |
| German | Robustheit |
| Portuguese | robustez |
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 robustness come from?
From robust + -ness.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).