Declension table of ?tveṣṭavya

Neuter	Singular	Dual	Plural
Nominative	tveṣṭavyam	tveṣṭavye	tveṣṭavyāni
Vocative	tveṣṭavya	tveṣṭavye	tveṣṭavyāni
Accusative	tveṣṭavyam	tveṣṭavye	tveṣṭavyāni
Instrumental	tveṣṭavyena	tveṣṭavyābhyām	tveṣṭavyaiḥ
Dative	tveṣṭavyāya	tveṣṭavyābhyām	tveṣṭavyebhyaḥ
Ablative	tveṣṭavyāt	tveṣṭavyābhyām	tveṣṭavyebhyaḥ
Genitive	tveṣṭavyasya	tveṣṭavyayoḥ	tveṣṭavyānām
Locative	tveṣṭavye	tveṣṭavyayoḥ	tveṣṭavyeṣu

Compound tveṣṭavya -

Adverb -tveṣṭavyam -tveṣṭavyāt