moivsmuWhich spelling fits?

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

Which to use

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

#26,538
“moi” frequency rank
#9,685
“mu” frequency rank
36223
confusion score

Side-by-Side Comparison

Feature moi mu
Definition Yo. Onomatopeya del mugido o bramido de un bovino.

Where the eye mixes moi and mu

Muted = shared; highlighted = the visual trap. They share 1 letter in sequence.

3 ch
moi
2 ch
mu

Visual trap between moi and mu

These two trip readers on the page rather than in the ear: moi is [mwa] while mu is [ˈmu]. 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 36223, derived from the frequency rank of both members and their visual similarity.

moi is recorded at frequency rank #26,538, classified as apron, pronounced [mwa]. mu is at rank #9,685, tagged as anoun, pronounced [ˈmu].

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 36223, this pair ranks #181,773 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of moi vs mu

Shared letters: m. Private to "moi": io. Private to "mu": u.

"moi" · 3 letters · shape CVV  ·  "mu" · 2 letters · shape CV

Frequently Asked Questions

Do "moi" and "mu" mean the same thing in a sentence?
No - they are not even the same part of speech. "moi" is a pronoun and "mu" a noun, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "moi" vs "mu" - which ranks higher?
"mu" is the more common of the two: it sits at frequency rank #9,685 in our Spanish list, against #26,538 for "moi". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "moi" and "mu" 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 "mu" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #181,773 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "moi" and "mu" also get mixed up with nearby pairs, the highest-scored neighbour is "moi vs mur". Nearby pair

Confusion rank #181,773 of 323,831 scored Spanish pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list