Declension table of ?kāṣṭhakīya

Neuter	Singular	Dual	Plural
Nominative	kāṣṭhakīyam	kāṣṭhakīye	kāṣṭhakīyāni
Vocative	kāṣṭhakīya	kāṣṭhakīye	kāṣṭhakīyāni
Accusative	kāṣṭhakīyam	kāṣṭhakīye	kāṣṭhakīyāni
Instrumental	kāṣṭhakīyena	kāṣṭhakīyābhyām	kāṣṭhakīyaiḥ
Dative	kāṣṭhakīyāya	kāṣṭhakīyābhyām	kāṣṭhakīyebhyaḥ
Ablative	kāṣṭhakīyāt	kāṣṭhakīyābhyām	kāṣṭhakīyebhyaḥ
Genitive	kāṣṭhakīyasya	kāṣṭhakīyayoḥ	kāṣṭhakīyānām
Locative	kāṣṭhakīye	kāṣṭhakīyayoḥ	kāṣṭhakīyeṣu

Compound kāṣṭhakīya -

Adverb -kāṣṭhakīyam -kāṣṭhakīyāt