rígidovsruidoTell them apart

Quick tell: rígido is a adjective, ruido is a noun, so they fill different roles in a sentence.

Which to use

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

#17,539
“rígido” frequency rank
#2,317
“ruido” frequency rank
19856
confusion score

Side-by-Side Comparison

Feature rígido ruido
Definition Que no se puede torcer o doblar. Sonido, en especial el que es fuerte y desagradable.

Where the eye mixes rígido and ruido

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

6 ch
rígido
5 ch
ruido

Why the eye confuses rígido with ruido

These two trip readers on the page rather than in the ear: rígido is [ˈrixið̞o] while ruido is [ˈrwið̞o]. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 19856, derived from the frequency rank of both members and their visual similarity.

rígido is recorded at frequency rank #17,539, classified as anadj, pronounced [ˈrixið̞o]. ruido is at rank #2,317, tagged as anoun, pronounced [ˈrwið̞o].

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 19856, this pair ranks #261,918 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of rígido vs ruido

Shared letters: dior. Private to "rígido": . Private to "ruido": u.

"rígido" · 6 letters · shape CVCVCV  ·  "ruido" · 5 letters · shape CVVCV

Known mistypes of this pair

  • ruidoriudo · rruido · rudio · ruiddo · ruiod · urido

Frequently Asked Questions

Is swapping "rígido" for "ruido" ever safe?
No - they are not even the same part of speech. "rígido" is an adjective and "ruido" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "rígido" or "ruido" show up more?
"ruido" is the more common of the two: it sits at frequency rank #2,317 in our Spanish list, against #17,539 for "rígido". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "rígido" and "ruido" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "rígido" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ruido" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #261,918 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "rígido" and "ruido" also get mixed up with nearby pairs, the highest-scored neighbour is "regado vs rígido". 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 #261,918 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