Where does “massacrous” come from?

massacrous (English) comes from English massacre, from Middle French massacre, from Old French macecrer, from Vulgar Latin matteuculare, from Latin matteuca, from Latin mattia, from Latin mateola, from Latin -ulus — Forms agent nouns from verbal roots.

massacrous (English): Of, or pertaining to, a massacre

Definitions

  1. Of, or pertaining to, a massacre

Ancestry of “massacrous”, step by step

massacrous traces back through two separate lines of ancestry.

via English massacre

StepLanguageWordMeaning
1EnglishmassacreThe killing of a considerable number where...
2Middle Frenchmassacremassacre
3Old Frenchmacecrer
4Vulgar Latinmatteuculare
5Latinmatteucaclub (heavy object)
6Latinmattia
7LatinmateolaThe meaning of this term is uncertain....
8Latin-ulusUsed to form a diminutive of a noun, indicating...
9Proto-Italic-olos
10Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
11Proto-Indo-European-e-lós
12Proto-Indo-European-lósForms agent nouns from verbal roots

via English ous

StepLanguageWordMeaning
1Englishousplural of ou
2EnglishouA probably extinct species of Hawaiian...
3AfrikaansouAn old fellow, guy, bloke; attributive form of...
4Dutchoudold
5Middle Dutchoutold
6Old Dutchald
7Proto-West Germanicaldold
8Proto-Germanicaldazold, grown up
9Proto-Indo-Europeanh₂eltós
10Proto-Indo-Europeanh₂él-to grow, nourish
Every word from Proto-Indo-European -lós