moovsmouWhat's the difference?

Quick tell: moo is a noun, mou is an adjective, so they fill different roles in a sentence.

Which to use

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

#42,574
“moo” frequency rank
#46,072
“mou” frequency rank
88646
confusion score

Side-by-Side Comparison

Feature moo mou
Definition Onomatopeya del mugido de un bovino; mu. Blando.

Where the spellings diverge

Shared letters are muted; the letters that actually set moo and mou apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

3 ch
moo
3 ch
mou

Spelling & Dictionary Insight

Say them out loud and nothing separates them: moo and mou carry the same recorded pronunciation, [muː]. Grammar is what tells them apart: one is anoun, the other anadjective, so most sentences will only accept one of them. They differ by a single letter - o in “moo” becomes u in “mou”. Our composite confusion score for this pair is 88646, derived from the frequency rank of both members and their visual similarity.

moo is recorded at frequency rank #42,574, classified as anoun, pronounced [muː]. mou is at rank #46,072, tagged as anadj, pronounced [mu].

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 88646, this pair ranks #3,630 of 323,831 scored Spanish confusable pairs - among the most confusable pairs.

Orthographic DNA of moo vs mou

Shared letters: mo. Private to "moo": -. Private to "mou": u.

"moo" · 3 letters · shape CVV  ·  "mou" · 3 letters · shape CVV

Frequency comparison

moo#42,574
mou#46,072

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "moo" and "mou" be used interchangeably?
No - they are not even the same part of speech. "moo" is a noun and "mou" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "moo" or "mou"?
"moo" is the more common of the two: it sits at frequency rank #42,574 in our Spanish list, against #46,072 for "mou". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering moo vs mou

The fastest way to pick the right one every time.

  • Check the role first: if you need a noun, it's “moo”; for an adjective, it's “mou”.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “moo” entry
  • Browse more pairs most likely to be confused. Most confusable

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list