Where does “Infinitivkonstruktion” come from?

Infinitivkonstruktion (German) comes from German Infinitiv, from French infinitif, from English Infinitive, from Latin infinitivus, from Latin īnfīnītus, from Latin īn-, from Latin în, from Latin en — in.

Ancestry of “Infinitivkonstruktion”, step by step

Infinitivkonstruktion traces back through two separate lines of ancestry.

via German Infinitiv

StepLanguageWordMeaning
1GermanInfinitivinfinitive
2Frenchinfinitifinfinitive
3EnglishInfinitiveThe infinitive mood or mode (a grammatical mood)
4Latininfinitivusunlimited, indefinite; infinitive; the infinitive
5Latinīnfīnītusboundless, unlimited, endless
6Latinīn-un-, non-, not
7Latinînin, at, on, upon, from (space)
8Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
9Proto-Italicenin
10Proto-Indo-Europeanh₁énin

via German Konstruktion

StepLanguageWordMeaning
1GermanKonstruktionconstruction
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Proto-Italic en