madvsmuWhat's the difference?

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

Which to use

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

#14,642
“mad” frequency rank
#9,685
“mu” frequency rank
24327
confusion score

Side-by-Side Comparison

Feature mad mu
Definition Grafía alternativa de mat. Onomatopeya del mugido o bramido de un bovino.

Where the eye mixes mad and mu

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

3 ch
mad
2 ch
mu

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: mad is /ˈmɑːt/ 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 24327, derived from the frequency rank of both members and their visual similarity.

mad is recorded at frequency rank #14,642, classified as anadj, pronounced /ˈmɑːt/. 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 24327, this pair ranks #241,662 of 323,831 scored Spanish confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of mad vs mu

Shared letters: m. Private to "mad": ad. Private to "mu": u.

"mad" · 3 letters · shape CVC  ·  "mu" · 2 letters · shape CV

Frequently Asked Questions

Can "mad" and "mu" be used interchangeably?
No - they are not even the same part of speech. "mad" is an adjective and "mu" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "mad" or "mu"?
"mu" is the more common of the two: it sits at frequency rank #9,685 in our Spanish list, against #14,642 for "mad". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

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

Source: FrequencyWords open word-frequency list