Declension table of ?arivas

Neuter	Singular	Dual	Plural
Nominative	arivat	aruṣī	arivāṃsi
Vocative	arivat	aruṣī	arivāṃsi
Accusative	arivat	aruṣī	arivāṃsi
Instrumental	aruṣā	arivadbhyām	arivadbhiḥ
Dative	aruṣe	arivadbhyām	arivadbhyaḥ
Ablative	aruṣaḥ	arivadbhyām	arivadbhyaḥ
Genitive	aruṣaḥ	aruṣoḥ	aruṣām
Locative	aruṣi	aruṣoḥ	arivatsu

Compound arivat -

Adverb -arivas