Declension table of ?tatevvas

Neuter	Singular	Dual	Plural
Nominative	tatevvat	tatevuṣī	tatevvāṃsi
Vocative	tatevvat	tatevuṣī	tatevvāṃsi
Accusative	tatevvat	tatevuṣī	tatevvāṃsi
Instrumental	tatevuṣā	tatevvadbhyām	tatevvadbhiḥ
Dative	tatevuṣe	tatevvadbhyām	tatevvadbhyaḥ
Ablative	tatevuṣaḥ	tatevvadbhyām	tatevvadbhyaḥ
Genitive	tatevuṣaḥ	tatevuṣoḥ	tatevuṣām
Locative	tatevuṣi	tatevuṣoḥ	tatevvatsu

Compound tatevvat -

Adverb -tatevvat