kein

Cognate with Welsh cefn (“back”), Cornish keyn (“back”), Gaulish Cebenna (“ridge, height”) (whence French Cévennes), ultimately from Proto-Celtic *kebno- (“back”), from Pre-Celtic *kebn-, which could be related to *kambos (“crooked, bent”).[1]

• IPA^(key): /ˈkɛjn/

kein m (plural keinoù)

1. back (the rear of body)

From Middle High German kein; from the merger of dechein/dehein (“someone; anyone”), from Old High German dehein; and nechein/nehein (“not any”), from Old High German nihein. More at none.

• (Standard German)
  • IPA^(key): /kaɪ̯n/

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• (Swabian)
  • IPA^(key): /kɔɪ̯/
• Rhymes: -aɪ̯n
• Homophone: Kain
• Homophone: keinen (according to a common pronunciation of this form)

kein

1. no; not a(n); not one; not any

   Das ist kein Bett. ― That is not a bed. (literally, “That is no bed.”)

   Es gibt kein Brot. (accusative) ― There is no bread.

• In colloquial spoken German, the masculine nominative forms mein, dein, kein, etc may not be distinguished from the accusative forms meinen, deinen, keinen etc in adjectival use. The distinction is maintained in substantival use, i.e. without a following noun.

The declension pattern for kein follows that of ein (“a”) and the possessive determiners, as does the declension of adjectives that follow kein. For the most part, the adjectives decline like those that appear after the definite article (the so-called weak declension pattern for German adjectives). However, kein lacks a masculine marker in the nominative case and a neuter marker in the nominative and accusative cases. Accordingly, adjectives following that plain form take an -er or -es to indicate the gender.

• kein Blatt vor den Mund nehmen
• kein Jota
• kein Kommentar
• kein Problem
• kein unbeschriebenes Blatt sein
• kein Wässerchen trüben können
• kein Wunder

• keiner

• “kein” in Duden online
• “kein” in Digitales Wörterbuch der deutschen Sprache

From Old Frisian *kēne, from Proto-West Germanic *kōnī, from Proto-Germanic *kōniz (“brave”). Cognate with English keen, Dutch koen, German kühn.

• (Clay) IPA^(key): /kai̯n/
• (Wood) IPA^(key): /kɛi̯n/

kein

1. proud, lively, perky
2. appropriate, neat
3. pretty, charming
4. prudish; chaste

• “kein”, in Wurdboek fan de Fryske taal (in Dutch), 2011