Where does “infestivity” come from?

infestivity (English) comes from English festivity, from Old French festivité, from Latin festivitas, from Latin fēstīvus, from Latin -īvus, from Proto-Indo-European -iHwós, from Proto-Indo-European -wós — Creates adjectives from verb stems.

infestivity (English): A lack of festivity, cheerfulness, or mirth

Definitions

  1. A lack of festivity, cheerfulness, or mirth

Ancestry of “infestivity”, step by step

infestivity traces back through two separate lines of ancestry.

via English festivity

StepLanguageWordMeaning
1EnglishfestivityA festival or similar celebration; An experience...
2Old Frenchfestivité
3Latinfestivitasfestivity, merriment, joy, mirth; kind demeanour,...
4Latinfēstīvuslively, festive, joyous, gay, merry
5Latin-īvusAdjective suffix
6Proto-Indo-European-iHwós
7Proto-Indo-European-wósCreates adjectives from verb stems

via English in

StepLanguageWordMeaning
1EnglishinUsed to indicate location, inclusion, or position...
2Middle EnglishinAny kind of accomodation; particularly; A home or...
3Old Englishinin; Alternative form of inn
4Proto-West Germanic*in
Every word from Proto-Indo-European -wósEvery word from Latin -īvusEvery word from Latin fēstīvus