Where does “tactile” come from?

tactile (Middle French) comes from Latin tactilis, from Latin tāctus, from Latin -tus, from Proto-Italic -tus, from Proto-Indo-European -tus — Derives action nouns from verb roots.

Ancestry of “tactile”, step by step

StepLanguageWordMeaning
1Latintactilistangible
2Latintāctustouched, having been touched, grasped, having been grasped
3Latin-tusForms the past participle of verbs; Forms...
4Proto-Italic-tus—
5Proto-Indo-European-tusDerives action nouns from verb roots

Words derived from “tactile”

Every word from Proto-Indo-European -tus →Every word from Latin -tus →Every word from Latin tāctus →