Which to use
“startle” is a verb and “sterile” is an adjective - they look or sound alike but fill different roles in a sentence.
- #42,422
- “startle” frequency rank
- #16,591
- “sterile” frequency rank
- 59013
- confusion score
Side-by-Side Comparison
| Feature | startle | sterile |
|---|---|---|
| Definition | To move suddenly, or be excited, on feeling alarm; to start. | Unable to reproduce (or procreate). |
Where the eye mixes startle and sterile
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. startle (CCVCCCV) and sterile (CCVCVCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses startle with sterile
These two trip readers on the page rather than in the ear: startle is /ˈstɑːt(ə)l/ while sterile is /ˈstɛɹaɪl/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 59013, derived from the frequency rank of both members and their visual similarity.
startle is recorded at frequency rank #42,422, classified as averb, pronounced /ˈstɑːt(ə)l/. sterile is at rank #16,591, tagged as anadj, pronounced /ˈstɛɹaɪl/.
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 59013, this pair ranks #108,841 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of startle vs sterile
Shared letters: elrst. Private to "startle": a. Private to "sterile": i.
"startle" · 7 letters · shape CCVCCCV · "sterile" · 7 letters · shape CCVCVCV
Known mistypes of this pair
Frequently Asked Questions
Do "startle" and "sterile" mean the same thing in a sentence?
Which is more common, "startle" or "sterile"?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "startle" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "sterile" - compare definitions side by side with the headword page. Word entry
- This pair ranks #108,841 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "startle" and "sterile" also get mixed up with nearby pairs, the highest-scored neighbour is "starkly vs startle". 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 #108,841 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.