Declension table of ?ādivas

Masculine	Singular	Dual	Plural
Nominative	ādivān	ādivāṃsau	ādivāṃsaḥ
Vocative	ādivan	ādivāṃsau	ādivāṃsaḥ
Accusative	ādivāṃsam	ādivāṃsau	āduṣaḥ
Instrumental	āduṣā	ādivadbhyām	ādivadbhiḥ
Dative	āduṣe	ādivadbhyām	ādivadbhyaḥ
Ablative	āduṣaḥ	ādivadbhyām	ādivadbhyaḥ
Genitive	āduṣaḥ	āduṣoḥ	āduṣām
Locative	āduṣi	āduṣoḥ	ādivatsu

Compound ādivat -

Adverb -ādivas