Declension table of ?goṣṭhya

Neuter	Singular	Dual	Plural
Nominative	goṣṭhyam	goṣṭhye	goṣṭhyāni
Vocative	goṣṭhya	goṣṭhye	goṣṭhyāni
Accusative	goṣṭhyam	goṣṭhye	goṣṭhyāni
Instrumental	goṣṭhyena	goṣṭhyābhyām	goṣṭhyaiḥ
Dative	goṣṭhyāya	goṣṭhyābhyām	goṣṭhyebhyaḥ
Ablative	goṣṭhyāt	goṣṭhyābhyām	goṣṭhyebhyaḥ
Genitive	goṣṭhyasya	goṣṭhyayoḥ	goṣṭhyānām
Locative	goṣṭhye	goṣṭhyayoḥ	goṣṭhyeṣu

Compound goṣṭhya -

Adverb -goṣṭhyam -goṣṭhyāt