The ending "-n" becomes "-en" after an "m", or a stressed vowel or diphthong; it becomes "-em" after "n" and, as an exception, in the adjective "nay" (new). Yiddish is slightly simpler than German in that German "-m" and "-n" are both "-n" in Yiddish (or, in the case of the definite article, "dem"), and Yiddish does not have a genitive case. The "definite" and "absolutive" versions of the neuter gender are a relic of the strong vs. weak adjective endings of German ("das gute Bier" vs. "gutes Bier").