Where does “unsobriety” come from?

unsobriety (English) comes from English sobriety, from Old French sobriete, from Latin sōbrietās, from Latin sōbrius, from Latin sē-, from Latin sex, from Proto-Italic seks, from Proto-Indo-European swéḱs — six.

Ancestry of “unsobriety”, step by step

unsobriety traces back through two separate lines of ancestry.

via English sobriety

StepLanguageWordMeaning
1EnglishsobrietyThe quality or state of being sober; Soundness of...
2Old Frenchsobriete
3Latinsōbrietāssobriety
4Latinsōbriussober (not drunk)
5Latinsē-apart-; aside-; away
6Latinsexsix; 6
7Proto-Italicsekssix
8Proto-Indo-Europeanswéḱssix

via English un

StepLanguageWordMeaning
1EnglishunOne
Every word from Proto-Indo-European swéḱsEvery word from Latin sē-Every word from Proto-Italic seks