German Etymology From Esel (“donkey”) + -ei. Pronunciation IPA(key): /ˌeːzəˈlaɪ̯/ Audio:(file) Rhymes: -aɪ̯ Noun Eselei f (genitive Eselei, plural Eseleien) asininity, folly Declension More information singular, plural ... singular plural indef. def. noun def. noun nominative eine die Eselei die Eseleien genitive einer der Eselei der Eseleien dative einer der Eselei den Eseleien accusative eine die Eselei die Eseleien Close Declension of Eselei [feminine] Further reading “Eselei” in Duden onlineWikiwand - on Seamless Wikipedia browsing. On steroids.