munvsmuyWhich spelling fits?

Quick tell: mun is a noun, muy is an adverb, so they fill different roles in a sentence.

Which to use

“mun” is a noun and “muy” is an adverb - they look or sound alike but fill different roles in a sentence.

#31,453
“mun” frequency rank
#46
“muy” frequency rank
31499
confusion score

Side-by-Side Comparison

Feature mun muy
Definition Boca. Expresa grado intenso, extenso o de abundancia de la característica del adjetivo o adverbio al que precede y es caracterizado como un adverbio de cantidad o modo..

Where the eye mixes mun and muy

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

3 ch
mun
3 ch
muy

Why the eye confuses mun with muy

These two trip readers on the page rather than in the ear: mun is [ˈmɵnː] while muy is [ˈmuj]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - n in “mun” becomes y in “muy”, and the parts of speech differ too (noun vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 31499, derived from the frequency rank of both members and their visual similarity.

mun is recorded at frequency rank #31,453, classified as anoun, pronounced [ˈmɵnː]. muy is at rank #46, tagged as anadv, pronounced [ˈmuj].

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 31499, this pair ranks #206,769 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mun vs muy

Shared letters: mu. Private to "mun": n. Private to "muy": y.

"mun" · 3 letters · shape CVC  ·  "muy" · 3 letters · shape CVV

Frequently Asked Questions

Do "mun" and "muy" mean the same thing in a sentence?
No - they are not even the same part of speech. "mun" is a noun and "muy" an adverb, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "mun" or "muy"?
"muy" is the more common of the two: it sits at frequency rank #46 in our Spanish list, against #31,453 for "mun". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "mun" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "muy" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #206,769 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "mun" and "muy" also get mixed up with nearby pairs, the highest-scored neighbour is "mun vs mur". Nearby pair

Confusion rank #206,769 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