Which to use
“robot” is a noun and “robust” is an adjective - they look or sound alike but fill different roles in a sentence.
- #4,793
- “robot” frequency rank
- #7,843
- “robust” frequency rank
- 12636
- confusion score
Side-by-Side Comparison
| Feature | robot | robust |
|---|---|---|
| Definition | A system of serfdom used in Central Europe, under which a tenant's rent was paid in forced labour. | Able to withstand adverse conditions. |
Where the eye mixes robot and robust
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.
Look-alike desk: robot vs robust
These two trip readers on the page rather than in the ear: robot is /ˈɹəʊ.bɒt/ while robust is /ɹəʊˈbʌst/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 12636, derived from the frequency rank of both members and their visual similarity.
robot is recorded at frequency rank #4,793, classified as anoun, pronounced /ˈɹəʊ.bɒt/. robust is at rank #7,843, tagged as anadj, pronounced /ɹəʊˈbʌst/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 12636, this pair ranks #480,404 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of robot vs robust
Shared letters: bort. Private to "robot": -. Private to "robust": su.
"robot" · 5 letters · shape CVCVC · "robust" · 6 letters · shape CVCVCC
Known mistypes of this pair
Frequently Asked Questions
Can "robot" and "robust" be used interchangeably?
In ordinary English text, does "robot" or "robust" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "robot" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "robust" - compare definitions side by side with the headword page. Word entry
- This pair ranks #480,404 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "robot" and "robust" also get mixed up with nearby pairs, the highest-scored neighbour is "rebut vs robust". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #480,404 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.