Which to use
“mos” is a particle and “must” is a verb - they look or sound alike but fill different roles in a sentence.
- #39,532
- “mos” frequency rank
- #11,712
- “must” frequency rank
- 51244
- confusion score
Side-by-Side Comparison
| Feature | mos | must |
|---|---|---|
| Definition | verleiht einer Aufforderung, Aussage, Frage oder einem Wunsch eine gewisse Nachdrücklichkeit | 2. Person Plural Imperativ Präsens Aktiv des Verbs musen |
Where the spellings diverge
Shared letters are muted; the letters that actually set mos and must apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: mos is [mos] while must is [muːst]. 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 (particle vs verb), which is usually the fastest check. Our composite confusion score for this pair is 51244, derived from the frequency rank of both members and their visual similarity.
mos is recorded at frequency rank #39,532, classified as aparticle, pronounced [mos]. must is at rank #11,712, tagged as averb, pronounced [muːst].
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 51244, this pair ranks #1,142,944 of 2,006,359 scored German confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of mos vs must
Shared letters: ms. Private to "mos": o. Private to "must": tu.
"mos" · 3 letters · shape CVC · "must" · 4 letters · shape CVCC
Known mistypes of this pair
- must ← mmust · msut · mustt · muts · umst
Frequency comparison
Frequently Asked Questions
Can "mos" and "must" be used interchangeably?
Which is more common, "mos" or "must"?
Remembering mos vs must
The fastest way to pick the right one every time.
- Check the role first: if you need a particle, it's “mos”; for a verb, it's “must”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “mos” entry
- Browse more pairs most likely to be confused. Most confusable