aproxvsaptoTell them apart

Quick tell: aprox is a adverb, apto is an adjective, so they fill different roles in a sentence.

Which to use

“aprox” is an adverb and “apto” is an adjective - they look or sound alike but fill different roles in a sentence.

#10,265
“aprox” frequency rank
#11,711
“apto” frequency rank
21976
confusion score

Side-by-Side Comparison

Feature aprox apto
Definition Aproximadamente. Que sirve, es adecuado o está disponible para un fin o propósito

Where the eye mixes aprox and apto

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
aprox
4 ch
apto

Visual trap between aprox and apto

These two trip readers on the page rather than in the ear: aprox is [aˈpɾoks] while apto is [ˈapt̪o]. 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 (adverb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 21976, derived from the frequency rank of both members and their visual similarity.

aprox is recorded at frequency rank #10,265, classified as anadv, pronounced [aˈpɾoks]. apto is at rank #11,711, tagged as anadj, pronounced [ˈapt̪o].

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 21976, this pair ranks #252,467 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of aprox vs apto

Shared letters: aop. Private to "aprox": rx. Private to "apto": t.

"aprox" · 5 letters · shape VCCVC  ·  "apto" · 4 letters · shape VCCV

Known mistypes of this pair

  • aproxaporx · approx · aproxx · aprrox · aprxo · arpox · parox
  • aptoapot · appto · aptto · atpo

Frequently Asked Questions

Can "aprox" and "apto" be used interchangeably?
No - they are not even the same part of speech. "aprox" is an adverb and "apto" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "aprox" or "apto"?
"aprox" is the more common of the two: it sits at frequency rank #10,265 in our Spanish list, against #11,711 for "apto". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "aprox" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "apto" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #252,467 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "aprox" and "apto" also get mixed up with nearby pairs, the highest-scored neighbour is "apis vs apto". 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 #252,467 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