Which to use
“mm” is an abbrev and “mu” is an unknown - they look or sound alike but fill different roles in a sentence.
- #1,186
- “mm” frequency rank
- #18,336
- “mu” frequency rank
- 19522
- confusion score
Side-by-Side Comparison
| Feature | mm | mu |
|---|---|---|
| Definition | Einheitensymbol für Millimeter | Genitiv Singular des Personalpronomens mina |
Letter map: mm vs mu
Shared letters muted; letters that set mm and mu apart highlighted. Shared run: 1.
Part-of-speech tell for mm / mu
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: mm is anabbrev and muanunknown. On the page they differ by a single letter - m in “mm” becomes u in “mu”. Our composite confusion score for this pair is 19522, derived from the frequency rank of both members and their visual similarity.
mm is recorded at frequency rank #1,186, classified as anabbrev. mu is at rank #18,336, tagged as anunknown, pronounced […].
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 19522, this pair ranks #1,907,462 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of mm vs mu
Shared letters: m. Private to "mm": -. Private to "mu": u.
"mm" · 2 letters · shape CC · "mu" · 2 letters · shape CV
Frequently Asked Questions
Is swapping "mm" for "mu" ever safe?
Which is more common, "mm" or "mu"?
After this comparison
Done with this confusable. These links stay specific to "mm" and "mu".
- Full dictionary entry for "mm" 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 #1,907,462 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
- "mm" and "mu" also get mixed up with nearby pairs, the highest-scored neighbour is "mu vs puzzles". Nearby pair
Confusion rank #1,907,462 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.