desu
/ˈdɛsuː/
"desu" is a 4-letter English headword indexed on PlainSpell.
The verdict
“desu” is uncommon English (frequency #65,825 among 26,416 “D” headwords), classed as a particle. The kind of spelling people second-guess.
- #65,825
- frequency rank, English
- 26,416
- “D” headwords
According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Used at the end of a sentence as an assertive particle.
| Property | Value |
|---|---|
| Headword | desu |
| Language | English |
| Part of speech | Particle |
| IPA | /ˈdɛsuː/ |
| Letters | 4 |
| Frequency rank | #65,825 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Where “desu” sits in English frequency
Rare enough to double-check
desu is uncommon English at frequency #65,825 among 26,416 “D” headwords, classed as aparticle, transcribed /ˈdɛsuː/. Rarity is why readers land here mid-draft. Gloss: "Used at the end of a sentence as an assertive particle.".
Our edit-distance generator produced no likely misspellings for desu, and the word's spelling is regular enough that our generator found nothing worth flagging. No close-neighbour confusable shows up for this headword in our dataset, which tends to mean the word is visually distinctive enough to stand on its own.
Etymologically, the entry records: Borrowed from Japanese です (desu, “be”), the polite form of the Japanese copula, found most often at the end of a sentence. Know Your Meme attributes its spread to 4chan memes of the Rozen Maiden character Suiseiseki who ends every sentence with desu (see al… The correct English form is desu, spelled D-E-S-U.
Definition
- 1Used at the end of a sentence as an assertive particle.
Etymology
Borrowed from Japanese です (desu, “be”), the polite form of the Japanese copula, found most often at the end of a sentence. Know Your Meme attributes its spread to 4chan memes of the Rozen Maiden character Suiseiseki who ends every sentence with desu (see also キャラ語尾).
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Using “desu”
The practical upshot for anyone who landed here from a spell-check.
- The one correct English spelling is D-E-S-U - every other letter order is a misspelling in standard orthography.
- Say it as /ˈdɛsuː/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
- Browse more English words and confusable pairs in the same reference. English words
Other uncommon English words near this rank
Data Source
Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.