lustrovsLuteroWhat's the difference?

Quick tell: lustro is a noun, Lutero is a name, so they fill different roles in a sentence.

Which to use

“lustro” is a noun and “Lutero” is a name - they look or sound alike but fill different roles in a sentence.

#42,548
“lustro” frequency rank
#27,672
“Lutero” frequency rank
70220
confusion score

Side-by-Side Comparison

Feature lustro Lutero
Definition Espacio de tiempo de cinco años. (Martín Lutero 1483-1546) Monje agustino, jefe de la reforma religiosa en Alemania. Los principales acontecimientos de su vida son : su protesta contra las indulgencias, la bula de excomunión, y las decretales quemadas en Wittemberg; el bando echado contra él en la dieta de Worms (1521); su cautiverio de la Wartburg y la traducción de la Biblia en lengua alemana.

Where the eye mixes lustro and Lutero

Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.

6 ch
lustro
6 ch
Lutero

Visual trap between lustro and Lutero

These two trip readers on the page rather than in the ear: lustro is [ˈlust̪ɾo] while Lutero is [luˈt̪eɾo]. 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 (noun vs name), which is usually the fastest check. Our composite confusion score for this pair is 70220, derived from the frequency rank of both members and their visual similarity.

lustro is recorded at frequency rank #42,548, classified as anoun, pronounced [ˈlust̪ɾo]. Lutero is at rank #27,672, tagged as aname, pronounced [luˈt̪eɾo].

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 70220, this pair ranks #30,203 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of lustro vs Lutero

Shared letters: lortu. Private to "lustro": s. Private to "Lutero": e.

"lustro" · 6 letters · shape CVCCCV  ·  "Lutero" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • lustrollustro · lsutro · lusrto · lusstro · lustor · lustrro · lusttro · lutsro
  • Luterollutero · ltuero · luetro · luteor · luterro · lutreo · luttero · ultero

Frequently Asked Questions

Is swapping "lustro" for "Lutero" ever safe?
No - they are not even the same part of speech. "lustro" is a noun and "Lutero" a name, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "lustro" or "Lutero" show up more?
"Lutero" is the more common of the two: it sits at frequency rank #27,672 in our Spanish list, against #42,548 for "lustro". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "lustro" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Lutero" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #30,203 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "lustro" and "Lutero" also get mixed up with nearby pairs, the highest-scored neighbour is "lustro vs lustros". 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 #30,203 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list