Wikipedia:Articles for deletion/List of names of European cities in different languages
I have no view on the others and do not claim to be a linguistic expert. However, German is an official language of Belgium and the places listed have (or had) substantial German or Luxembourgish-speaking populations. I am not sure the term "exonym" is even correct in this context, but in this case it seems to me to have encyclopedic, rather than "dictionary" value. In my reading,  provides no obvious guidance in the situation where the subject is a collected group of terms and not a dictionary-style definition
— User:Brigade, 10:40, 19 June 2021 (UTC)
Stance: keep
Cited policy: WP:NOTDIC (Wikipedia:Wikipedia is not a dictionary)