From Proto-Tai *cramꟲ. Cognate with Thai ถ้ำ (tâm), Lao ຖ້ຳ (tham), Khün ᨳ᩶ᩣᩴ, Lü ᦏᧄᧉ (ṫham²), Shan ထမ်ႈ (thām), Tai Nüa ᥗᥛᥲ (thàm), Phake ထံ (thaṃ), Tai Dam ꪖꪾ꫁, Ahom 𑜌𑜪 (thaṃ), Zhuang gamj.
ᨳ᩶ᩣᩴ • (transliteration needed)