Declension table of ?upāntya

Masculine	Singular	Dual	Plural
Nominative	upāntyaḥ	upāntyau	upāntyāḥ
Vocative	upāntya	upāntyau	upāntyāḥ
Accusative	upāntyam	upāntyau	upāntyān
Instrumental	upāntyena	upāntyābhyām	upāntyaiḥ upāntyebhiḥ
Dative	upāntyāya	upāntyābhyām	upāntyebhyaḥ
Ablative	upāntyāt	upāntyābhyām	upāntyebhyaḥ
Genitive	upāntyasya	upāntyayoḥ	upāntyānām
Locative	upāntye	upāntyayoḥ	upāntyeṣu

Compound upāntya -

Adverb -upāntyam -upāntyāt