Reconstruction:Proto-Japonic/kuru

Verb

 * 1) to give

Etymology 2
The core underlying meaning seems to be, as in Japanese adverb and related vowel-shifted root  and derivations such as 🇨🇬 and.

The derived sense of (verb) and  (adjective) arose from the way that someone suffering from convulsions would often turn around and around.

Root

 * 1) to spin; to turn around and around