irisvsissTell them apart

Quick tell: iris is a noun, iss is a verb, so they fill different roles in a sentence.

Which to use

“iris” is a noun and “iss” is a verb - they look or sound alike but fill different roles in a sentence.

#9,504
“iris” frequency rank
#22,303
“iss” frequency rank
31807
confusion score

Side-by-Side Comparison

Feature iris iss
Definition Partie colorée de l’œil qui environne la prunelle et qui présente quelquefois des nuances circulaires et concentriques. Deuxième personne du singulier de l’impératif présent de essen.

Where the eye mixes iris and iss

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

4 ch
iris
3 ch
iss

Visual trap between iris and iss

These two trip readers on the page rather than in the ear: iris is \i.ʁis\ while iss is \ɪs\. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 31807, derived from the frequency rank of both members and their visual similarity.

iris is recorded at frequency rank #9,504, classified as anoun, pronounced \i.ʁis\. iss is at rank #22,303, tagged as averb, pronounced \ɪs\.

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 31807, this pair ranks #301,429 of 440,172 scored French confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of iris vs iss

Shared letters: is. Private to "iris": r. Private to "iss": -.

"iris" · 4 letters · shape VCVC  ·  "iss" · 3 letters · shape VCC

Known mistypes of this pair

  • irisiirs · iriss · irris · irsi · riis

Frequently Asked Questions

Is swapping "iris" for "iss" ever safe?
No - they are not even the same part of speech. "iris" is a noun and "iss" a verb, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "iris" vs "iss" - which ranks higher?
"iris" is the more common of the two: it sits at frequency rank #9,504 in our French list, against #22,303 for "iss". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

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

  • Full dictionary entry for "iris" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "iss" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #301,429 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "iris" and "iss" also get mixed up with nearby pairs, the highest-scored neighbour is "isi vs iss". 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 #301,429 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