Where does “*attinctus” come from?

*attinctus (Vulgar Latin) comes from Latin attingō, from Latin tangō, from Proto-Italic *tangō, from Proto-Indo-European denḱ- — to bite.

Ancestry of “*attinctus”, step by step

StepLanguageWordMeaning
1Latinattingōto come in contact with, touch
2Latintangōto touch, grasp
3Proto-Italic*tangō—
4Proto-Indo-Europeandenḱ-to bite
Every word from Proto-Indo-European denḱ- →Every word from Proto-Italic *tangō →Every word from Latin tangō →