(p. 2) akaṭhina not hard or difficult; not severe. 3)

(p. 73) aẏaskaṭhina as hard as iron; extremely hard. 30)

(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)

(p. 194) kaṭhinī, kaṭhinikā chalk. 32)

(p. 194) kaṭhinībhūta hardened; stiffened. 33)

(p. 429) ṭhikaṭhikānā certainty; fixity; trace; whereabouts; fixed abode or address. 4)

(p. 1014) sukaṭhina very difficult or hard or stiff or tough. 14)