Where does “Suizidgedanke” come from?

Suizidgedanke (German) comes from German Suizid, from New Latin suicidium, from Latin -cīdium, from Latin -ium, from Latin -ius, from Proto-Italic -jōs, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “Suizidgedanke”, step by step

Suizidgedanke traces back through two separate lines of ancestry.

via German Suizid

StepLanguageWordMeaning
1GermanSuizidsuicide
2New Latinsuicidiumsuicide
3Latin-cīdium
4Latin-iumSuffix used to form abstract nouns, sometimes...
5Latin-iusforming adjectives from nouns; nominative neuter...
6Proto-Italic-jōsForms comparative adjectives
7Proto-Indo-European-yósCreates adjectives from noun or verb stems

via German gedanke

StepLanguageWordMeaning
1Germangedankethought
2Middle High Germangedanc
3Old High Germangidanc
4Proto-Germanicgaþankô
Every word from Proto-Indo-European -yós