illvsIOCWhat's the difference?

Quick tell: ill is a adverb, IOC is an abbrev, so they fill different roles in a sentence.

Which to use

“ill” is an adverb and “IOC” is an abbrev - they look or sound alike but fill different roles in a sentence.

#25,175
“ill” frequency rank
#15,121
“IOC” frequency rank
40296
confusion score

Side-by-Side Comparison

Feature ill IOC
Definition schlecht, falsch Abkürzung für International Olympic Committee

Letter map: ill vs IOC

Shared letters muted; letters that set ill and IOC apart highlighted. Shared run: 1.

3 ch
ill
3 ch
IOC

Grammar separator: ill vs IOC

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ill is anadverb and IOCanabbrev. On the page they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 40296, derived from the frequency rank of both members and their visual similarity.

ill is recorded at frequency rank #25,175, classified as anadv, pronounced [ɪl]. IOC is at rank #15,121, tagged as anabbrev.

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 40296, this pair ranks #1,512,564 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of ill vs IOC

Shared letters: i. Private to "ill": l. Private to "IOC": co.

"ill" · 3 letters · shape VCC  ·  "IOC" · 3 letters · shape VVC

Frequently Asked Questions

Can "ill" and "IOC" be used interchangeably?
No - they are not even the same part of speech. "ill" is an adverb and "IOC" an abbrev, so a sentence built for one is usually ungrammatical with the other.
In ordinary German text, does "ill" or "IOC" show up more?
"IOC" is the more common of the two: it sits at frequency rank #15,121 in our German list, against #25,175 for "ill". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

You've compared "ill" and "IOC". Here's where to go from here.

  • Full dictionary entry for "ill" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "IOC" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #1,512,564 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
  • "ill" and "IOC" also get mixed up with nearby pairs, the highest-scored neighbour is "ill vs IMs". Nearby pair

Confusion rank #1,512,564 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list