infeccionesvsinfecciosasConfusable pair

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

Which to use

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

#11,430
“infecciones” frequency rank
#27,271
“infecciosas” frequency rank
38701
confusion score

Side-by-Side Comparison

Feature infecciones infecciosas
Definition Forma del plural de infección. Forma del femenino plural de infeccioso.

Where the eye mixes infecciones and infecciosas

Muted = shared; highlighted = the visual trap. They share 9 letters in sequence. infecciones and infecciosas follow the identical consonant-vowel pattern (VCCVCCVVCVC). Same shape at a glance is often the real trap, independent of shared letters.

11 ch
infecciones
11 ch
infecciosas

Look-alike desk: infecciones vs infecciosas

These two trip readers on the page rather than in the ear: infecciones is [ĩɱfekˈsjones] while infecciosas is [ĩɱfekˈsjosas]. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (noun vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 38701, derived from the frequency rank of both members and their visual similarity.

infecciones is recorded at frequency rank #11,430, classified as anoun, pronounced [ĩɱfekˈsjones]. infecciosas is at rank #27,271, tagged as anadj, pronounced [ĩɱfekˈsjosas].

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 38701, this pair ranks #168,560 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of infecciones vs infecciosas

Shared letters: cefinos. Private to "infecciones": -. Private to "infecciosas": a.

"infecciones" · 11 letters · shape VCCVCCVVCVC  ·  "infecciosas" · 11 letters · shape VCCVCCVVCVC

Known mistypes of this pair

  • infecciones ← ifnecciones · inefcciones · infceciones · infeccinoes · infeccioens · infeccioness · infeccionnes · infeccionse
  • infecciosas ← ifnecciosas · inefcciosas · infceciosas · infeccioass · infecciosass · infecciossa · infecciossas · infeccisoas

Frequently Asked Questions

Is swapping "infecciones" for "infecciosas" ever safe?
No - they are not even the same part of speech. "infecciones" is a noun and "infecciosas" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "infecciones" or "infecciosas" show up more?
"infecciones" is the more common of the two: it sits at frequency rank #11,430 in our Spanish list, against #27,271 for "infecciosas". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

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

  • Full dictionary entry for "infecciones" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "infecciosas" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #168,560 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "infecciones" and "infecciosas" also get mixed up with nearby pairs, the highest-scored neighbour is "infecciosa vs infecciosas". 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 #168,560 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