Declension table of upavasatha

Masculine	Singular	Dual	Plural
Nominative	upavasathaḥ	upavasathau	upavasathāḥ
Vocative	upavasatha	upavasathau	upavasathāḥ
Accusative	upavasatham	upavasathau	upavasathān
Instrumental	upavasathena	upavasathābhyām	upavasathaiḥ upavasathebhiḥ
Dative	upavasathāya	upavasathābhyām	upavasathebhyaḥ
Ablative	upavasathāt	upavasathābhyām	upavasathebhyaḥ
Genitive	upavasathasya	upavasathayoḥ	upavasathānām
Locative	upavasathe	upavasathayoḥ	upavasatheṣu

Compound upavasatha -

Adverb -upavasatham -upavasathāt