mivsmuWhat's the difference?

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

Which to use

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

#29
“mi” frequency rank
#9,685
“mu” frequency rank
9714
confusion score

Side-by-Side Comparison

Feature mi mu
Definition Adjetivo posesivo de la primera persona singular; de mí. Onomatopeya del mugido o bramido de un bovino.

Where the eye mixes mi and mu

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

2 ch
mi
2 ch
mu

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: mi is [mi] while mu is [ˈmu]. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - i in “mi” becomes u in “mu”, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 9714, derived from the frequency rank of both members and their visual similarity.

mi is recorded at frequency rank #29, classified as anadj, pronounced [mi]. 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 9714, this pair ranks #301,048 of 323,831 scored Spanish confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of mi vs mu

Shared letters: m. Private to "mi": i. Private to "mu": u.

"mi" · 2 letters · shape CV  ·  "mu" · 2 letters · shape CV

Frequently Asked Questions

Can "mi" and "mu" be used interchangeably?
No - they are not even the same part of speech. "mi" is an adjective and "mu" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "mi" or "mu"?
"mi" is the more common of the two: it sits at frequency rank #29 in our Spanish list, against #9,685 for "mu". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

You've compared "mi" and "mu". Here's where to go from here.

  • Full dictionary entry for "mi" 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 #301,048 of 323,831 scored Spanish confusable pairs in this corpus vintage. Corpus statistics
  • "mi" and "mu" also get mixed up with nearby pairs, the highest-scored neighbour is "mu vs mur". Nearby pair

PlainSpell is a reference corpus, not spelling advice. Verify unusual forms in context.

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

Source: FrequencyWords open word-frequency list