From Proto-Tai *keːmꟲ (“cheek”). Cognate with Thai แก้ม (gɛ̂ɛm), Northern Thai ᨠᩯ᩠᩶ᨾ, Lao ແກ້ມ (kǣm), Lü ᦶᦂᧄᧉ (k̇aem²), Shan ၵႅမ်ႈ (kēm), Tai Dam ꪵꪀ꫁ꪣ, Ahom 𑜀𑜪𑜧 (kaṃw), Bouyei jeemc, Zhuang gemj, Tày kẻm.
ᥐᥦᥛᥲ (kàem) (1963 orthography ᥐᥦᥛ̀)