Which to use
“ie” is a noun and “is” is a verb - they look or sound alike but fill different roles in a sentence.
- #27,130
- “ie” frequency rank
- #1,709
- “is” frequency rank
- 28839
- confusion score
Side-by-Side Comparison
| Feature | ie | is |
|---|---|---|
| Definition | água (H₂0). | contração de agus; e |
Letter map: ie vs is
Shared letters muted; letters that set ie and is apart highlighted. Shared run: 1.
Grammar separator: ie vs is
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: ie is anoun and isaverb. On the page they differ by a single letter - e in “ie” becomes s in “is”. Our composite confusion score for this pair is 28839, derived from the frequency rank of both members and their visual similarity.
ie is recorded at frequency rank #27,130, classified as anoun, pronounced /ˈi.e/, /ˈi.ɛ/. is is at rank #1,709, tagged as averb.
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 28839, this pair ranks #39,930 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of ie vs is
Shared letters: i. Private to "ie": e. Private to "is": s.
"ie" · 2 letters · shape VV · "is" · 2 letters · shape VC
Frequently Asked Questions
Is swapping "ie" for "is" ever safe?
Which is more common, "ie" or "is"?
What to do next
Pair "ie" vs "is" is on the table, pick a follow-up below.
- Full dictionary entry for "ie" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "is" - compare definitions side by side with the headword page. Word entry
- This pair ranks #39,930 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
- "ie" and "is" also get mixed up with nearby pairs, the highest-scored neighbour is "ie vs ino". Nearby pair
Confusion rank #39,930 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.