CEI
"cei" is a 3-letter English headword indexed on PlainSpell.
The verdict
“CEI” is uncommon English (frequency #63,501 among 5,599 “C” headwords), classed as a noun. The kind of spelling people second-guess.
- #63,501
- frequency rank, English
- 5,599
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Initialism of cum-eating instructions: written or recorded instructions directing a submissive to consume semen.
Corpus desk
Index EN-cei · CEI · English
CEI · rank #63,501 · 0 variants · 0 confusables
- FREQ-RARE #63,501
- LEN-MID 3 letters
- VOW-2 2 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 5,599
- PHOTO-FINISH cassino
Nearest frequency peer: cassino (-1 rank slots)
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
Long-tail ranks near “CEI”
Sparse band: bars invert rank so rarer forms read shorter
- CARICOM
CARICOM
36,507 corpus weight
- cassino
cassino
36,501 corpus weight
- CEI
CEI
36,500 corpus weight
- CFU
CFU
36,498 corpus weight
- chemtrails
chemtrails
36,496 corpus weight
- circumferen…
circumferential
36,494 corpus weight
What this shows Long-tail view: where “CEI” sits against similarly uncommon English ranks.
| Property | Value |
|---|---|
| Headword | CEI |
| Language | English |
| Part of speech | Noun |
| Letters | 3 |
| Frequency rank | #63,501 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “CEI” in English
Rare enough to double-check
CEI is uncommon English at frequency #63,501 among 5,599 “C” headwords, classed as anoun. Rarity is why readers land here mid-draft. 2 senses are on record.
CEI doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. No close-neighbour confusable shows up for this headword in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.
No explicit etymology string is stored for this entry, so its spelling is easiest explained by how it's pronounced rather than where it came from. The correct English form is CEI, spelled C-E-I.
Definition
- 1Initialism of cum-eating instructions: written or recorded instructions directing a submissive to consume semen.
- 2Initialism of child exploitation images.
Recorded use
Wiktionary exampleThese source excerpts show how CEI appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Past operations, such as those that took down the child exploitation site Playpen, or current efforts to arrest purveyors of CEI on Freenet, seek to chase out what one Dark Web site admin called the “true black sheep” of these networks.
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
How do you spell "CEI"?
What does "CEI" mean?
What language does "CEI" come from?
Is PlainSpell free to use?
Similar English words by spelling shape
Same letter count and similar misspelling depth for "CEI", not the corpus desk frequency band.
Same letter count
Frequency-ranked English headwords with 3 letters (nearest by frequency rank).