moivsMoonWhich spelling fits?

Quick tell: moi is a pronoun, Moon is a noun, so they fill different roles in a sentence.

Which to use

“moi” is a pronoun and “Moon” is a noun - they look or sound alike but fill different roles in a sentence.

#20,946
“moi” frequency rank
#9,893
“Moon” frequency rank
30839
confusion score

Side-by-Side Comparison

Feature moi Moon
Definition mim, eu, pronome pessoal tónico da primeira pessoa do singular: Lua

Where the eye mixes moi and Moon

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

3 ch
moi
4 ch
Moon

Look-alike desk: moi vs Moon

These two trip readers on the page rather than in the ear: moi is /mwa/ while Moon is /mu:n/ ouvir^(fonte ?). 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 (pronoun vs noun), which is usually the fastest check. Our composite confusion score for this pair is 30839, derived from the frequency rank of both members and their visual similarity.

moi is recorded at frequency rank #20,946, classified as apron, pronounced /mwa/. Moon is at rank #9,893, tagged as anoun, pronounced /mu:n/ ouvir^(fonte ?).

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 30839, this pair ranks #37,414 of 75,631 scored Portuguese confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of moi vs Moon

Shared letters: mo. Private to "moi": i. Private to "Moon": n.

"moi" · 3 letters · shape CVV  ·  "Moon" · 4 letters · shape CVVC

Known mistypes of this pair

  • Moonmmoon · mon · moonn · omon

Frequently Asked Questions

Do "moi" and "Moon" mean the same thing in a sentence?
No - they are not even the same part of speech. "moi" is a pronoun and "Moon" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "moi" vs "Moon" - which ranks higher?
"Moon" is the more common of the two: it sits at frequency rank #9,893 in our Portuguese list, against #20,946 for "moi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

After this comparison

Eye-level mix-up between "moi" and "Moon" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "moi" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "Moon" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #37,414 of 75,631 scored Portuguese confusable pairs in this corpus vintage. Corpus statistics
  • "moi" and "Moon" also get mixed up with nearby pairs, the highest-scored neighbour is "maa vs moi". 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 #37,414 of 75,631 scored Portuguese pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list