Declension table of ?upāṃśvantaryāma

Masculine	Singular	Dual	Plural
Nominative	upāṃśvantaryāmaḥ	upāṃśvantaryāmau	upāṃśvantaryāmāḥ
Vocative	upāṃśvantaryāma	upāṃśvantaryāmau	upāṃśvantaryāmāḥ
Accusative	upāṃśvantaryāmam	upāṃśvantaryāmau	upāṃśvantaryāmān
Instrumental	upāṃśvantaryāmeṇa	upāṃśvantaryāmābhyām	upāṃśvantaryāmaiḥ upāṃśvantaryāmebhiḥ
Dative	upāṃśvantaryāmāya	upāṃśvantaryāmābhyām	upāṃśvantaryāmebhyaḥ
Ablative	upāṃśvantaryāmāt	upāṃśvantaryāmābhyām	upāṃśvantaryāmebhyaḥ
Genitive	upāṃśvantaryāmasya	upāṃśvantaryāmayoḥ	upāṃśvantaryāmāṇām
Locative	upāṃśvantaryāme	upāṃśvantaryāmayoḥ	upāṃśvantaryāmeṣu

Compound upāṃśvantaryāma -

Adverb -upāṃśvantaryāmam -upāṃśvantaryāmāt