antivsAPIWhat's the difference?

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

Which to use

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

#2,486
“anti” frequency rank
#19,027
“API” frequency rank
21513
confusion score

Side-by-Side Comparison

Feature anti API
Definition Que es contrario, que se opone (respecto de una causa). Conjunto de especificaciones e implementación de comunicación entre componentes software. Se trata de de un conjunto de funciones o llamadas al sistema o bien un conjuto de clases y sus métodos cuyo propósito es ofrecer acceso a los servicios de un sistema.

Where the eye mixes anti and API

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

4 ch
anti
3 ch
API

Look-alike desk: anti vs API

These two trip readers on the page rather than in the ear: anti is [ˈãn̪t̪i] while API is [ˈapi]. 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 21513, derived from the frequency rank of both members and their visual similarity.

anti is recorded at frequency rank #2,486, classified as anadj, pronounced [ˈãn̪t̪i]. API is at rank #19,027, tagged as anoun, pronounced [ˈapi].

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 21513, this pair ranks #254,589 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of anti vs API

Shared letters: ai. Private to "anti": nt. Private to "API": p.

"anti" · 4 letters · shape VCCV  ·  "API" · 3 letters · shape VCV

Known mistypes of this pair

  • antianit · annti · antti · atni · nati

Frequently Asked Questions

Do "anti" and "API" mean the same thing in a sentence?
No - they are not even the same part of speech. "anti" is an adjective and "API" a noun, so a sentence built for one is usually ungrammatical with the other.
In ordinary Spanish text, does "anti" or "API" show up more?
"anti" is the more common of the two: it sits at frequency rank #2,486 in our Spanish list, against #19,027 for "API". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "anti" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "API" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #254,589 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "anti" and "API" also get mixed up with nearby pairs, the highest-scored neighbour is "API vs apis". 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 #254,589 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