cis-

[t͡sɪs]

/[t͡sɪs]/ prefix

The verdict

“cis-” is uncommon German (outside the top frequency list), classed as a prefix. The kind of spelling people second-guess.

Unranked
below top-frequency German
4
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - diesseits

Corpus desk

Index DE-cis · cis- · German

cis- · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MID 4 letters
  • VOW-1 1 vowel
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "C" thin
  • PHOTO-UNK Peer pending

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.

Key facts for cis-
PropertyValue
Headwordcis-
LanguageGerman
Part of speechPrefix
IPA[t͡sɪs]
Letters4
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Langschwanz-Rang von „cis-“ im Deutschen

cis-sitzt jenseits der 100.000 häufigsten deutschen Formen, im Schwanz spezialisierten oder seltenen Wortschatzes.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

cis- is uncommon German outside the top frequency list, classed as aprefix, transcribed [t͡sɪs]. Rarity is why readers land here mid-draft. 2 senses are on record.

cis- doesn't appear in our generated misspelling index, a sign its spelling follows regular German conventions. It is not paired with a close-neighbour confusable in our dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.

This entry carries no recorded etymology, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct German form is cis-, spelled C-I-S--.

Definition

  1. 1
    diesseits
  2. 2
    cisgeschlechtlich/cisident

Recorded use

Wiktionary examples

These source excerpts show how cis- appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Die Angabe cislunar betrifft den Weltraum zwischen Erde und Mond.
  2. „Entspricht sie dem bei der Geburt zugewiesenen Geschlecht, wird dies cisgeschlechtlich genannt.“

Antonyms

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "cis-"?
"cis-" is spelled C-I-S--. The IPA pronunciation is [t͡sɪs].
What does "cis-" mean?
As a prefix, "cis-" means: diesseits
How do you pronounce "cis-"?
The IPA (International Phonetic Alphabet) transcription for "cis-" is [t͡sɪs]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "cis-" come from?
"cis-" is a German word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list