Declension table of ?upaviṣṭaka

Masculine	Singular	Dual	Plural
Nominative	upaviṣṭakaḥ	upaviṣṭakau	upaviṣṭakāḥ
Vocative	upaviṣṭaka	upaviṣṭakau	upaviṣṭakāḥ
Accusative	upaviṣṭakam	upaviṣṭakau	upaviṣṭakān
Instrumental	upaviṣṭakena	upaviṣṭakābhyām	upaviṣṭakaiḥ upaviṣṭakebhiḥ
Dative	upaviṣṭakāya	upaviṣṭakābhyām	upaviṣṭakebhyaḥ
Ablative	upaviṣṭakāt	upaviṣṭakābhyām	upaviṣṭakebhyaḥ
Genitive	upaviṣṭakasya	upaviṣṭakayoḥ	upaviṣṭakānām
Locative	upaviṣṭake	upaviṣṭakayoḥ	upaviṣṭakeṣu

Compound upaviṣṭaka -

Adverb -upaviṣṭakam -upaviṣṭakāt