Declension table of ?tveṣṭavya

Masculine	Singular	Dual	Plural
Nominative	tveṣṭavyaḥ	tveṣṭavyau	tveṣṭavyāḥ
Vocative	tveṣṭavya	tveṣṭavyau	tveṣṭavyāḥ
Accusative	tveṣṭavyam	tveṣṭavyau	tveṣṭavyān
Instrumental	tveṣṭavyena	tveṣṭavyābhyām	tveṣṭavyaiḥ tveṣṭavyebhiḥ
Dative	tveṣṭavyāya	tveṣṭavyābhyām	tveṣṭavyebhyaḥ
Ablative	tveṣṭavyāt	tveṣṭavyābhyām	tveṣṭavyebhyaḥ
Genitive	tveṣṭavyasya	tveṣṭavyayoḥ	tveṣṭavyānām
Locative	tveṣṭavye	tveṣṭavyayoḥ	tveṣṭavyeṣu

Compound tveṣṭavya -

Adverb -tveṣṭavyam -tveṣṭavyāt