Declension table of ?upāvasu

Neuter	Singular	Dual	Plural
Nominative	upāvasu	upāvasunī	upāvasūni
Vocative	upāvasu	upāvasunī	upāvasūni
Accusative	upāvasu	upāvasunī	upāvasūni
Instrumental	upāvasunā	upāvasubhyām	upāvasubhiḥ
Dative	upāvasune	upāvasubhyām	upāvasubhyaḥ
Ablative	upāvasunaḥ	upāvasubhyām	upāvasubhyaḥ
Genitive	upāvasunaḥ	upāvasunoḥ	upāvasūnām
Locative	upāvasuni	upāvasunoḥ	upāvasuṣu

Compound upāvasu -

Adverb -upāvasu