Where does “Dunkelziffer” come from?

Dunkelziffer (German) comes from German Dünkel, from Middle High German tunkel, from Old High German tunkalī, from Old High German -ī, from Proto-West Germanic -ī, from Proto-Germanic -į̄, from Proto-Indo-European -íh₂, from Proto-Indo-European -h₂ — Creates collective nouns, which refer to groups...

Dunkelziffer (German): dark figure estimated number of unreported cases

Definitions

  1. dark figure estimated number of unreported cases

Ancestry of “Dunkelziffer”, step by step

Dunkelziffer traces back through two separate lines of ancestry.

via German Dünkel

StepLanguageWordMeaning
1GermanDünkelconceit, smugness, arrogance
2Middle High Germantunkel
3Old High Germantunkalīdark, darkness
4Old High German-ness
5Proto-West Germanic-ness, -th
6Proto-Germanic-į̄-th
7Proto-Indo-European-íh₂
8Proto-Indo-European-h₂Creates collective nouns, which refer to groups...

via German Ziffer

StepLanguageWordMeaning
1GermanZifferdigit, numeral; a numbered division unit written...
2Middle High Germanziferdigit
3Old Frenchcifre
4Latincifranumeral, cipher; zero
5Arabicصِفْرzero, nothing, empty, void; nothing, cipher;...
6Sanskritशून्यzero; cipher, cypher; blank, deserted
7Proto-Indo-EuropeanḱówH-
Every word from Proto-Indo-European -h₂