Where does “nineteenness” come from?

nineteenness (English) comes from English nineteen, from Middle English nyntene, from Old English niġontēne, from Proto-Germanic newuntehun, from Proto-Germanic tehun, from Proto-Indo-European déḱm̥t — ten.

nineteenness (English): The property of being nineteen in age or number

Definitions

  1. The property of being nineteen in age or number

Ancestry of “nineteenness”, step by step

nineteenness traces back through two separate lines of ancestry.

via English nineteen

StepLanguageWordMeaning
1EnglishnineteenThe cardinal number occurring after eighteen and...
2Middle Englishnyntenenineteen
3Old Englishniġontēne
4Proto-Germanicnewuntehunnineteen
5Proto-Germanictehunten
6Proto-Indo-Europeandéḱm̥tten

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Indo-European déḱm̥tEvery word from Proto-Germanic tehunEvery word from Proto-Germanic newuntehun