Declension table of ?kupatha

Masculine	Singular	Dual	Plural
Nominative	kupathaḥ	kupathau	kupathāḥ
Vocative	kupatha	kupathau	kupathāḥ
Accusative	kupatham	kupathau	kupathān
Instrumental	kupathena	kupathābhyām	kupathaiḥ kupathebhiḥ
Dative	kupathāya	kupathābhyām	kupathebhyaḥ
Ablative	kupathāt	kupathābhyām	kupathebhyaḥ
Genitive	kupathasya	kupathayoḥ	kupathānām
Locative	kupathe	kupathayoḥ	kupatheṣu

Compound kupatha -

Adverb -kupatham -kupathāt