librovsligeroWhich spelling fits?

Quick tell: libro is a noun, ligero is an adjective, so they fill different roles in a sentence.

Which to use

“libro” is a noun and “ligero” is an adjective - they look or sound alike but fill different roles in a sentence.

#388
“libro” frequency rank
#6,078
“ligero” frequency rank
6466
confusion score

Side-by-Side Comparison

Feature libro ligero
Definition Conjunto de hojas de papel unidas por un borde formando un volumen. Que pesa poco o que tiene poca densidad.

Where the eye mixes libro and ligero

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

5 ch
libro
6 ch
ligero

Why the eye confuses libro with ligero

These two trip readers on the page rather than in the ear: libro is [ˈliβ̞ɾo] while ligero is [liˈxeɾo]. 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 6466, derived from the frequency rank of both members and their visual similarity.

libro is recorded at frequency rank #388, classified as anoun, pronounced [ˈliβ̞ɾo]. ligero is at rank #6,078, tagged as anadj, pronounced [liˈxeɾo].

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 6466, this pair ranks #310,700 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of libro vs ligero

Shared letters: ilor. Private to "libro": b. Private to "ligero": eg.

"libro" · 5 letters · shape CVCCV  ·  "ligero" · 6 letters · shape CVCVCV

Known mistypes of this pair

  • libroilbro · lbiro · libbro · libor · librro · lirbo · livro · llibro
  • ligeroilgero · lgiero · liegro · ligeor · ligerro · liggero · ligreo · lligero

Frequently Asked Questions

Is swapping "libro" for "ligero" ever safe?
No - they are not even the same part of speech. "libro" is a noun and "ligero" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "libro" or "ligero" show up more?
"libro" is the more common of the two: it sits at frequency rank #388 in our Spanish list, against #6,078 for "ligero". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

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

  • Full dictionary entry for "libro" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ligero" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #310,700 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "libro" and "ligero" also get mixed up with nearby pairs, the highest-scored neighbour is "libro vs livre". 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 #310,700 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