Declension table of ?upeyivas

Neuter	Singular	Dual	Plural
Nominative	upeyivat	upeyuṣī	upeyivāṃsi
Vocative	upeyivat	upeyuṣī	upeyivāṃsi
Accusative	upeyivat	upeyuṣī	upeyivāṃsi
Instrumental	upeyuṣā	upeyivadbhyām	upeyivadbhiḥ
Dative	upeyuṣe	upeyivadbhyām	upeyivadbhyaḥ
Ablative	upeyuṣaḥ	upeyivadbhyām	upeyivadbhyaḥ
Genitive	upeyuṣaḥ	upeyuṣoḥ	upeyuṣām
Locative	upeyuṣi	upeyuṣoḥ	upeyivatsu

Compound upeyivat -

Adverb -upeyivas