Where does “reactiveness” come from?

reactiveness (English) comes from English reactive, from English -ive, from Middle English -yf, from Old French -if, from Latin -īvus, from Proto-Indo-European -iHwós, from Proto-Indo-European -wós — Creates adjectives from verb stems.

reactiveness (English): The quality or state of being reactive

Definitions

  1. The quality or state of being reactive

Ancestry of “reactiveness”, step by step

reactiveness traces back through two separate lines of ancestry.

via English reactive

StepLanguageWordMeaning
1Englishreactivethat reacts or responds to a stimulus; that...
2English-iveAn adjective suffix signifying relating or...
3Middle English-yfA suffix designating adjectives, adverbs and...
4Old French-if-ive
5Latin-īvusAdjective suffix
6Proto-Indo-European-iHwós
7Proto-Indo-European-wósCreates adjectives from verb stems

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 -wósEvery word from Latin -īvusEvery word from English -ive
reactiveness — Etymology, Origin & Word History | Etymology Explorer