legiónvsleíanWhich spelling fits?

Quick tell: legión is a noun, leían is a verb, so they fill different roles in a sentence.

Which to use

“legión” is a noun and “leían” is a verb - they look or sound alike but fill different roles in a sentence.

#13,083
“legión” frequency rank
#44,830
“leían” frequency rank
57913
confusion score

Side-by-Side Comparison

Feature legión leían
Definition Ejército de la Roma antigua que se componía de caballería e infantería. Tercera persona del plural (ellos, ellas; ustedes, 2.ª persona) del pretérito imperfecto de indicativo de leer.

Where the eye mixes legión and leían

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence. legión runs 6 letters (CVCVVC) against leían's 5 (CVVVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
legión
5 ch
leían

Why the eye confuses legión with leían

These two trip readers on the page rather than in the ear: legión is [leˈxjõn] while leían is [leˈiãn]. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 57913, derived from the frequency rank of both members and their visual similarity.

legión is recorded at frequency rank #13,083, classified as anoun, pronounced [leˈxjõn]. leían is at rank #44,830, tagged as averb, pronounced [leˈiãn].

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 57913, this pair ranks #68,556 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of legión vs leían

Shared letters: eln. Private to "legión": gió. Private to "leían": aí.

"legión" · 6 letters · shape CVCVVC  ·  "leían" · 5 letters · shape CVVVC

Frequently Asked Questions

Is swapping "legión" for "leían" ever safe?
No - they are not even the same part of speech. "legión" is a noun and "leían" a verb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "legión" or "leían"?
"legión" is the more common of the two: it sits at frequency rank #13,083 in our Spanish list, against #44,830 for "leían". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

What to do next

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "legión" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "leían" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #68,556 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "legión" and "leían" also get mixed up with nearby pairs, the highest-scored neighbour is "leían vs lucían". Nearby pair

Confusion rank #68,556 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