Which to use
“mamífero” is an adjective and “mamíferos” is a noun - they look or sound alike but fill different roles in a sentence.
- #39,853
- “mamífero” frequency rank
- #17,200
- “mamíferos” frequency rank
- 57053
- confusion score
Side-by-Side Comparison
| Feature | mamífero | mamíferos |
|---|---|---|
| Definition | (Clase Mammalia) Se dice de cualquiera de las especies de animales vertebrados caracterizados por la presencia de mamas en las hembras; entre los caracteres típicos se encuentran la presencia de pelo en la piel, la homeotermia, un sistema circulatorio de doble circulación, un diafragma entre abdomen y tórax y el superior desarrollo del cerebro. Con la sola excepción de los monotremas, son vivíparos. | Forma del plural de mamífero. |
Where the eye mixes mamífero and mamíferos
Muted = shared; highlighted = the visual trap. They share 8 letters in sequence. mamífero runs 8 letters (CVCVCVCV) against mamíferos's 9 (CVCVCVCVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between mamífero and mamíferos
These two trip readers on the page rather than in the ear: mamífero is [maˈmifeɾo] while mamíferos is [maˈmifeɾos]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “mamífero” sits inside “mamíferos”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 57053, derived from the frequency rank of both members and their visual similarity.
mamífero is recorded at frequency rank #39,853, classified as anadj, pronounced [maˈmifeɾo]. mamíferos is at rank #17,200, tagged as anoun, pronounced [maˈmifeɾos].
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 57053, this pair ranks #72,057 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of mamífero vs mamíferos
Shared letters: aefmorí. Private to "mamífero": -. Private to "mamíferos": s.
"mamífero" · 8 letters · shape CVCVCVCV · "mamíferos" · 9 letters · shape CVCVCVCVC
Frequently Asked Questions
Can "mamífero" and "mamíferos" be used interchangeably?
Frequency check: "mamífero" vs "mamíferos" - which ranks higher?
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 "mamífero" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "mamíferos" - compare definitions side by side with the headword page. Word entry
- This pair ranks #72,057 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "mamífero" and "mamíferos" also get mixed up with nearby pairs, the highest-scored neighbour is "mamífero vs marinero". Nearby pair
Confusion rank #72,057 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.