Where does “strenuity” come from?

strenuity (English) comes from Latin strenuitas, from Latin -tās, from Proto-Indo-European -teh₂ts, from Proto-Indo-European -teh₂, from Proto-Indo-European -tós — Creates verbal adjectives from verb stems.

strenuity (English): strenuousness; activity

Definitions

  1. strenuousness; activity

Ancestry of “strenuity”, step by step

strenuity traces back through two separate lines of ancestry.

via Latin strenuitas

StepLanguageWordMeaning
1Latinstrenuitasnimbleness, briskness, vivacity, activity
2Latin-tāsty, -dom, -hood, -ness, -ship
3Proto-Indo-European-teh₂tsUsed to form nouns representing state of being
4Proto-Indo-European-teh₂Used to form nouns representing state of being
5Proto-Indo-European-tósCreates verbal adjectives from verb stems

via English strenuous

StepLanguageWordMeaning
1EnglishstrenuousHaving great vigour or energy; forceful;...
2Latinstrēnuusbrisk, nimble, quick, prompt, active
3Proto-Indo-European(s)treg-rigid, stiff; to be stiff, rigid, strong
Every word from Proto-Indo-European -tósEvery word from Latin -tāsEvery word from Proto-Indo-European -teh₂