Which to use
“efímera” is a noun and “efímeras” is an adjective - they look or sound alike but fill different roles in a sentence.
- #29,181
- “efímera” frequency rank
- #48,969
- “efímeras” frequency rank
- 78150
- confusion score
Side-by-Side Comparison
| Feature | efímera | efímeras |
|---|---|---|
| Definition | (orden Ephemeroptera) Cualquiera de unas 2500 especies de insectos pterigotos, característicos por su complejo ciclo vital. Pasan la mayor parte de su vida en forma de ninfa, de hábito acuático, mudando repetidamente hasta alcanzar la forma madura de imago alada; la mayoría de las especies sólo vive unas pocas horas en esta forma, muriendo poco después de la reproducción. | Forma del femenino plural de efímero. |
Where the eye mixes efímera and efímeras
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. efímera runs 7 letters (VCVCVCV) against efímeras's 8 (VCVCVCVC) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between efímera and efímeras
These two trip readers on the page rather than in the ear: efímera is [eˈfimeɾa] while efímeras is [eˈfimeɾas]. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “efímera” sits inside “efímeras”, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 78150, derived from the frequency rank of both members and their visual similarity.
efímera is recorded at frequency rank #29,181, classified as anoun, pronounced [eˈfimeɾa]. efímeras is at rank #48,969, tagged as anadj, pronounced [eˈfimeɾas].
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 78150, this pair ranks #14,881 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.
Orthographic DNA of efímera vs efímeras
Shared letters: aefmrí. Private to "efímera": -. Private to "efímeras": s.
"efímera" · 7 letters · shape VCVCVCV · "efímeras" · 8 letters · shape VCVCVCVC
Frequently Asked Questions
Do "efímera" and "efímeras" mean the same thing in a sentence?
Frequency check: "efímera" vs "efímeras" - 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 "efímera" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "efímeras" - compare definitions side by side with the headword page. Word entry
- This pair ranks #14,881 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
- "efímera" and "efímeras" also get mixed up with nearby pairs, the highest-scored neighbour is "efímeras vs efímero". Nearby pair
Confusion rank #14,881 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.