Declension table of upayantṛ

Masculine	Singular	Dual	Plural
Nominative	upayantā	upayantārau	upayantāraḥ
Vocative	upayantaḥ	upayantārau	upayantāraḥ
Accusative	upayantāram	upayantārau	upayantṝn
Instrumental	upayantrā	upayantṛbhyām	upayantṛbhiḥ
Dative	upayantre	upayantṛbhyām	upayantṛbhyaḥ
Ablative	upayantuḥ	upayantṛbhyām	upayantṛbhyaḥ
Genitive	upayantuḥ	upayantroḥ	upayantṝṇām
Locative	upayantari	upayantroḥ	upayantṛṣu

Compound upayantṛ -

Adverb -upayantṛ