Declension table of ?niveṣṭavya

Masculine	Singular	Dual	Plural
Nominative	niveṣṭavyaḥ	niveṣṭavyau	niveṣṭavyāḥ
Vocative	niveṣṭavya	niveṣṭavyau	niveṣṭavyāḥ
Accusative	niveṣṭavyam	niveṣṭavyau	niveṣṭavyān
Instrumental	niveṣṭavyena	niveṣṭavyābhyām	niveṣṭavyaiḥ niveṣṭavyebhiḥ
Dative	niveṣṭavyāya	niveṣṭavyābhyām	niveṣṭavyebhyaḥ
Ablative	niveṣṭavyāt	niveṣṭavyābhyām	niveṣṭavyebhyaḥ
Genitive	niveṣṭavyasya	niveṣṭavyayoḥ	niveṣṭavyānām
Locative	niveṣṭavye	niveṣṭavyayoḥ	niveṣṭavyeṣu

Compound niveṣṭavya -

Adverb -niveṣṭavyam -niveṣṭavyāt