II vs ith, What's the Difference?

Which to use

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

#1,020
“II” frequency rank: #49,435
“ith” frequency rank: 50455
confusion score

Side-by-Side Comparison

Feature	II	ith
Definition	Initialism of illegal immigrant.	Occurring at position i in a sequence.

Letter map: II vs ith

Shared letters muted; letters that set II and ith apart highlighted. Shared run: 1.

2 ch

3 ch

ith

Role in the sentence - II and ith

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: II is anoun and ithanadjective. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 50455, derived from the frequency rank of both members and their visual similarity.

II is recorded at frequency rank #1,020, classified as anoun. ith is at rank #49,435, tagged as anadj, pronounced /aɪθ/.

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 50455, this pair ranks #174,109 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of II vs ith

Shared letters: i. Private to "II": -. Private to "ith": ht.

"II" · 2 letters · shape VV · "ith" · 3 letters · shape VCC

Frequently Asked Questions

Is swapping "II" for "ith" ever safe?

No - they are not even the same part of speech. "II" is a noun and "ith" an adjective, so a sentence built for one is usually ungrammatical with the other.

In ordinary English text, does "II" or "ith" show up more?

"II" is the more common of the two: it sits at frequency rank #1,020 in our English list, against #49,435 for "ith". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pair "II" vs "ith" is on the table, pick a follow-up below.

Full dictionary entry for "II" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "ith" - compare definitions side by side with the headword page. Word entry
This pair ranks #174,109 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"II" and "ith" also get mixed up with nearby pairs, the highest-scored neighbour is "ISR vs ith". Nearby pair

Confusion rank #174,109 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.