iotavsitsTell them apart

Quick tell: iota is a noun, its is a determiner, so they fill different roles in a sentence.

Which to use

“iota” is a noun and “its” is a determiner - they look or sound alike but fill different roles in a sentence.

#30,103
“iota” frequency rank
#75
“its” frequency rank
30178
confusion score

Side-by-Side Comparison

Feature iota its
Definition The ninth letter of the Greek alphabet (Ι, ι). Belonging to it.

Where the eye mixes iota and its

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

4 ch
iota
3 ch
its

Why the eye confuses iota with its

These two trip readers on the page rather than in the ear: iota is /aɪˈəʊtə/ while its is /ɪts/. 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 (noun vs determiner), which is usually the fastest check. Our composite confusion score for this pair is 30178, derived from the frequency rank of both members and their visual similarity.

iota is recorded at frequency rank #30,103, classified as anoun, pronounced /aɪˈəʊtə/. its is at rank #75, tagged as adet, pronounced /ɪts/.

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 30178, this pair ranks #356,745 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of iota vs its

Shared letters: it. Private to "iota": ao. Private to "its": s.

"iota" · 4 letters · shape VVCV  ·  "its" · 3 letters · shape VCC

Known mistypes of this pair

  • iotaioat · iotta · itoa · oita

Frequently Asked Questions

Can "iota" and "its" be used interchangeably?
No - they are not even the same part of speech. "iota" is a noun and "its" a determiner, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "iota" vs "its" - which ranks higher?
"its" is the more common of the two: it sits at frequency rank #75 in our English list, against #30,103 for "iota". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "iota" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "its" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #356,745 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "iota" and "its" also get mixed up with nearby pairs, the highest-scored neighbour is "iota vs ith". 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 #356,745 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