ICAOvsIvoWhich spelling fits?

Which to use

“ICAO” and “Ivo” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#41,186
“ICAO” frequency rank
#39,870
“Ivo” frequency rank
81056
confusion score

Side-by-Side Comparison

Feature ICAO Ivo
Definition Acronym of International Civil Aviation Organization, a United Nations agency headquartered in Montreal, Canada. A male given name from the Germanic languages.

Where the eye mixes ICAO and Ivo

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence. ICAO runs 4 letters (VCVV) against Ivo's 3 (VCV) - the length gap alone is often enough to separate them once you know to check it.

4 ch
ICAO
3 ch
Ivo

Why the eye confuses ICAO with Ivo

A purely visual mix-up. ICAO (/ˌaɪˈkeɪˌoʊ/) and Ivo (/ˈaɪvəʊ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 81056, derived from the frequency rank of both members and their visual similarity.

ICAO is recorded at frequency rank #41,186, classified as aname, pronounced /ˌaɪˈkeɪˌoʊ/. Ivo is at rank #39,870, tagged as aname, pronounced /ˈaɪvəʊ/.

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 81056, this pair ranks #18,502 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of ICAO vs Ivo

Shared letters: io. Private to "ICAO": ac. Private to "Ivo": v.

"ICAO" · 4 letters · shape VCVV  ·  "Ivo" · 3 letters · shape VCV

Known mistypes of this pair

  • ICAO ← iaco · iccao · icoa

Frequently Asked Questions

Do "ICAO" and "Ivo" mean the same thing in a sentence?
No. They are said differently (/ˌaɪˈkeɪˌoʊ/ versus /ˈaɪvəʊ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "ICAO" or "Ivo" show up more?
"Ivo" is the more common of the two: it sits at frequency rank #39,870 in our English list, against #41,186 for "ICAO". 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 "ICAO" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Ivo" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #18,502 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "ICAO" and "Ivo" also get mixed up with nearby pairs, the highest-scored neighbour is "ICAO vs Ilan". 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 #18,502 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list