(p. 194) kaṭhina hard, firm; stiff; stern, strict; severe; difficult; cruel, merciless (কঠিন হৃদয়); tremendous, intense; solid (কঠিন পদার্থ); serious (কঠিন রোগ). fem. কঠিনা । ̃তা, ̃ত্ব n. hardness, firmness; stiffness; sternness, strictness, severity; difficulty; cruelty, mercilessness; tremendousness, intensity; solidity; seriousness. 31)