Declension table of ?kāṭhya

Masculine	Singular	Dual	Plural
Nominative	kāṭhyaḥ	kāṭhyau	kāṭhyāḥ
Vocative	kāṭhya	kāṭhyau	kāṭhyāḥ
Accusative	kāṭhyam	kāṭhyau	kāṭhyān
Instrumental	kāṭhyena	kāṭhyābhyām	kāṭhyaiḥ kāṭhyebhiḥ
Dative	kāṭhyāya	kāṭhyābhyām	kāṭhyebhyaḥ
Ablative	kāṭhyāt	kāṭhyābhyām	kāṭhyebhyaḥ
Genitive	kāṭhyasya	kāṭhyayoḥ	kāṭhyānām
Locative	kāṭhye	kāṭhyayoḥ	kāṭhyeṣu

Compound kāṭhya -

Adverb -kāṭhyam -kāṭhyāt