Which to use
“lacra” and “lastra” are a confusable Spanish pair: similar on the page, but distinct in meaning, check the gloss before you choose.
- #26,114
- “lacra” frequency rank
- #37,186
- “lastra” frequency rank
- 63300
- confusion score
Side-by-Side Comparison
| Feature | lacra | lastra |
|---|---|---|
| Definition | Secuela de una enfermedad. | Piedra plana que sale de la cantera en hojas planas y de poco grueso, a manera de tablas. |
Where the eye mixes lacra and lastra
Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. lacra runs 5 letters (CVCCV) against lastra's 6 (CVCCCV) - the length gap alone is often enough to separate them once you know to check it.
Why the eye confuses lacra with lastra
A purely visual mix-up. lacra ([ˈlakɾa]) and lastra ([ˈlast̪ɾa]) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 63300, derived from the frequency rank of both members and their visual similarity.
lacra is recorded at frequency rank #26,114, classified as anoun, pronounced [ˈlakɾa]. lastra is at rank #37,186, tagged as anoun, pronounced [ˈlast̪ɾa].
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 63300, this pair ranks #49,187 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of lacra vs lastra
Shared letters: alr. Private to "lacra": c. Private to "lastra": st.
"lacra" · 5 letters · shape CVCCV · "lastra" · 6 letters · shape CVCCCV
Known mistypes of this pair
Frequently Asked Questions
Do "lacra" and "lastra" mean the same thing in a sentence?
Which is more common, "lacra" or "lastra"?
Useful next steps
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "lacra" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "lastra" - compare definitions side by side with the headword page. Word entry
- This pair ranks #49,187 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "lacra" and "lastra" also get mixed up with nearby pairs, the highest-scored neighbour is "labora vs lastra". 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 #49,187 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.