dei vs do, What's the Difference?

Which to use

“dei” is a noun and “do” is a particle - they look or sound alike but fill different roles in a sentence.

#7,028
“dei” frequency rank: #2,290
“do” frequency rank: 9318
confusion score

Side-by-Side Comparison

Feature	dei	do
Definition	Genitiv Singular des Substantivs deus	beim Solmisieren oder Solfeggieren benutzte Silbe zum Singen eines bestimmten Tons aus der Tonleiter

Letter map: dei vs do

Shared letters muted; letters that set dei and do apart highlighted. Shared run: 1.

3 ch

dei

2 ch

Part-of-speech tell for dei / do

Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: dei is anoun and doaparticle. On the page they differ by 1 letter(s) in length. Our composite confusion score for this pair is 9318, derived from the frequency rank of both members and their visual similarity.

dei is recorded at frequency rank #7,028, classified as anoun, pronounced […]. do is at rank #2,290, tagged as aparticle, pronounced [doː].

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 9318, this pair ranks #1,980,537 of 2,006,359 scored German confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of dei vs do

Shared letters: d. Private to "dei": ei. Private to "do": o.

"dei" · 3 letters · shape CVV · "do" · 2 letters · shape CV

Frequently Asked Questions

Can "dei" and "do" be used interchangeably?

No - they are not even the same part of speech. "dei" is a noun and "do" a particle, so a sentence built for one is usually ungrammatical with the other.

In ordinary German text, does "dei" or "do" show up more?

"do" is the more common of the two: it sits at frequency rank #2,290 in our German list, against #7,028 for "dei". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pair "dei" vs "do" is on the table, pick a follow-up below.

Full dictionary entry for "dei" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "do" - compare definitions side by side with the headword page. Word entry
This pair ranks #1,980,537 of 2,006,359 scored German confusable pairs in this corpus vintage. Corpus statistics
"dei" and "do" also get mixed up with nearby pairs, the highest-scored neighbour is "dei vs puzzles". Nearby pair

Confusion rank #1,980,537 of 2,006,359 scored German pairs, corpus vintage 2026-09-03, not spelling advice.