čakls

Etymology
Derived from an obsolete verb, from , whence also ; the meaning changed from “moving quickly” to “working hard.” The e → a change parallels ,. The t → č change (palatalization) is not regular in, which suggests either an expressive or affective feature (compare , , from , ), or the former existence of parallel forms with a and e: +  → ; compare dialectal  ([tʃækls]). Note that the same stem also palatalized in Tocharian cake (“river”), 🇨🇬; since both the ancient Balts and the Tocharians were in direct contact with Northern Iranian tribes, this palatalization may be the result of Iranian influence. Cognates include 🇨🇬, (compare, 🇨🇬, 🇨🇬.

Adjective

 * 1) industrious, hard-working, diligent who works well, who works a lot