Declension table of ?sphātavya

Neuter	Singular	Dual	Plural
Nominative	sphātavyam	sphātavye	sphātavyāni
Vocative	sphātavya	sphātavye	sphātavyāni
Accusative	sphātavyam	sphātavye	sphātavyāni
Instrumental	sphātavyena	sphātavyābhyām	sphātavyaiḥ
Dative	sphātavyāya	sphātavyābhyām	sphātavyebhyaḥ
Ablative	sphātavyāt	sphātavyābhyām	sphātavyebhyaḥ
Genitive	sphātavyasya	sphātavyayoḥ	sphātavyānām
Locative	sphātavye	sphātavyayoḥ	sphātavyeṣu

Compound sphātavya -

Adverb -sphātavyam -sphātavyāt