From Proto-Tai *lɤkᴰ. Cognate with Thai ลึก (lʉ́k), Northern Thai ᩃᩮᩥᩢ᩠ᨠ, Lü ᦵᦟᦲᧅ (loek), Shan လိုၵ်ႉ (lṵ̂ek), Ahom 𑜎𑜢𑜤𑜀𑜫 (luek), Zhuang laeg.
ເລິກ • (lœk) (abstract noun ຄວາມເລິກ)