ITERvsitsWhat's the difference?

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

Which to use

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

#46,832
“ITER” frequency rank
#15,916
“its” frequency rank
62748
confusion score

Side-by-Side Comparison

Feature ITER its
Definition Projet scientifique international de recherche sur un réacteur à fusion nucléaire de type tokamak. Son, sa (lorsque c’est une chose qui possède).

Where the eye mixes ITER and its

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

4 ch
ITER
3 ch
its

Visual trap between ITER and its

These two trip readers on the page rather than in the ear: ITER is \i.tɛʁ\ 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 (name vs determiner), which is usually the fastest check. Our composite confusion score for this pair is 62748, derived from the frequency rank of both members and their visual similarity.

ITER is recorded at frequency rank #46,832, classified as aname, pronounced \i.tɛʁ\. its is at rank #15,916, 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 62748, this pair ranks #85,501 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of ITER vs its

Shared letters: it. Private to "ITER": er. Private to "its": s.

"ITER" · 4 letters · shape VCVC  ·  "its" · 3 letters · shape VCC

Known mistypes of this pair

  • ITERietr · iterr · itre · itter

Frequently Asked Questions

Is swapping "ITER" for "its" ever safe?
No - they are not even the same part of speech. "ITER" is a name and "its" a determiner, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "ITER" or "its"?
"its" is the more common of the two: it sits at frequency rank #15,916 in our French list, against #46,832 for "ITER". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "ITER" 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 #85,501 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "ITER" and "its" also get mixed up with nearby pairs, the highest-scored neighbour is "ime vs ITER". 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 #85,501 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list