Where does “unsensitiveness” come from?

unsensitiveness (English) comes from English unsensitive, from English sensitive, from Middle French sensitif, from Medieval Latin sensitivus, from Latin sentio, from Proto-Italic sentjō, from Proto-Indo-European sent-, from Proto-Indo-European h₁es- — to be.

unsensitiveness (English): Synonym of insensitiveness

Definitions

  1. Synonym of insensitiveness

Ancestry of “unsensitiveness”, step by step

unsensitiveness traces back through two separate lines of ancestry.

via English unsensitive

StepLanguageWordMeaning
1EnglishunsensitiveSynonym of insensitive
2EnglishsensitiveHaving the faculty of sensation; pertaining to...
3Middle Frenchsensitif
4Medieval Latinsensitivussensitive; detectable, perceivable
5LatinsentioI feel, I sense, I perceive; I perceive, I am...
6Proto-Italicsentjō
7Proto-Indo-Europeansent-to head for, to go, to travel; to feel
8Proto-Indo-Europeanh₁es-to be

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 h₁es-Every word from Proto-Indo-European sent-Every word from Proto-Italic sentjō