IlanvsillTell them apart

Quick tell: Ilan is a name, ill is an adjective, so they fill different roles in a sentence.

Which to use

“Ilan” is a name and “ill” is an adjective - they look or sound alike but fill different roles in a sentence.

#49,996
“Ilan” frequency rank
#1,946
“ill” frequency rank
51942
confusion score

Side-by-Side Comparison

Feature Ilan ill
Definition A male given name from Hebrew. Evil; wicked (of people).

Letter map: Ilan vs ill

Shared letters muted; letters that set Ilan and ill apart highlighted. Shared run: 2.

4 ch
Ilan
3 ch
ill

Grammar separator: Ilan vs ill

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: Ilan is aname and illanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 51942, derived from the frequency rank of both members and their visual similarity.

Ilan is recorded at frequency rank #49,996, classified as aname. ill is at rank #1,946, tagged as anadj, pronounced /ɪl/.

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 51942, this pair ranks #161,223 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of Ilan vs ill

Shared letters: il. Private to "Ilan": an. Private to "ill": -.

"Ilan" · 4 letters · shape VCVC  ·  "ill" · 3 letters · shape VCC

Known mistypes of this pair

  • Ilanialn · ilann · illan

Frequently Asked Questions

Is swapping "Ilan" for "ill" ever safe?
No - they are not even the same part of speech. "Ilan" is a name and "ill" an adjective, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "Ilan" or "ill" show up more?
"ill" is the more common of the two: it sits at frequency rank #1,946 in our English list, against #49,996 for "Ilan". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Done with this confusable. These links stay specific to "Ilan" and "ill".

  • Full dictionary entry for "Ilan" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "ill" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #161,223 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "Ilan" and "ill" also get mixed up with nearby pairs, the highest-scored neighbour is "Ilan vs Irfan". 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 #161,223 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