Declension table of ?sthātavya

Neuter	Singular	Dual	Plural
Nominative	sthātavyam	sthātavye	sthātavyāni
Vocative	sthātavya	sthātavye	sthātavyāni
Accusative	sthātavyam	sthātavye	sthātavyāni
Instrumental	sthātavyena	sthātavyābhyām	sthātavyaiḥ
Dative	sthātavyāya	sthātavyābhyām	sthātavyebhyaḥ
Ablative	sthātavyāt	sthātavyābhyām	sthātavyebhyaḥ
Genitive	sthātavyasya	sthātavyayoḥ	sthātavyānām
Locative	sthātavye	sthātavyayoḥ	sthātavyeṣu

Compound sthātavya -

Adverb -sthātavyam -sthātavyāt