robust
ro·bust/ɹoʊˈbʌst/adjective
robust is spelled R-O-B-U-S-T: 6 letters and 2 syllables (ro·bust). It appears 8.7 times per million words in written English, the 7,797th most frequent word form (wordfreq, 2021 data). As an adjective, robust means “Able to withstand adverse conditions” (English Wiktionary, September 2026).
How many letters and syllables are in robust?
| Letters | 6: R-O-B-U-S-T |
|---|---|
| Syllables | 2: ro·bust |
| In writing | 8.7 times per million words; the 7,797th most frequent word form |
| Wrong spellings searched | none measured in search |
| Rhymes with |
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); rhymes and same-letter words are computed by PlainSpell from its own word list.
How common is robust?
Robust appears 8.7 times per million words in written English, the 7,797th 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 robust?
- UK /ɹəʊˈbʌst/
- UK /ɹəˈbʌst/
- US /ɹoʊˈbʌst/
Robust has 2 syllables, split ro·bust in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-uk-robust.ogg, LL-Q1860_(eng)-I_learned_some_phrases-robust.wav, Wikimedia Commons (author and licence on each file's page).
What rhymes with robust?
The 12 most written words on PlainSpell end in the same sounds as robust from its last stressed vowel (/ʌst/):
Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).
Forms of robust
- more robust comparative
- robuster comparative
- most robust superlative
- robustest superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does robust mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
Able to withstand adverse conditions.
- 2
Evincing strength and health; strong; (often, especially) both large and healthy.
He was a robust man of six feet four.
- 3
Requiring strength or vigor.
robust employment
- 4
Sensible (of intellect etc.); straightforward, not given to or confused by uncertainty or subtlety.
robust findings
- 5
Rough; rude.
- 6
Designed or evolved in such a way as to be resistant to total failure despite partial damage.
- 7
Resistant or impervious to failure regardless of user input or unexpected conditions.
- 8
Not greatly influenced by errors in assumptions about the distribution of sample errors.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Robust in Spanish, French, German and Portuguese
In the sense evincing strength:
| Language | Words |
|---|---|
| French | robuste, costaud |
| German | robust, widerstandsfähig, kräftig, zäh, herausfordernd, anspruchsvoll |
| Portuguese | robusto |
| Spanish | robusto |
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 robust come from?
Learned borrowing from Latin rōbustus.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).