From Middle Chinese 役 (MC ywek). Cognate with Isan เวียก, Khün ᩅ᩠ᨿᨠ, Lao ວຽກ (wīak), Tai Dam ꪫꪸꪀ, Vietnamese việc.
ᦵᦞᧅ • (vek) (Tai Tham spelling ᩅᩮ᩠ᨠ)