Where does “senectitude” come from?

senectitude (English) comes from Latin senectūs, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

senectitude (English): old age

Definitions

  1. old age

Ancestry of “senectitude”, step by step

StepLanguageWordMeaning
1Latinsenectūsaged, very old
2Latin-tusForms the past participle of verbs; Forms...
3Proto-Italic-tus—
4Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Latin senectūs →
senectitude — Etymology, Origin & Word History | Etymology Explorer