Declension table of ?ṛptha

Neuter	Singular	Dual	Plural
Nominative	ṛptham	ṛpthe	ṛpthāni
Vocative	ṛptha	ṛpthe	ṛpthāni
Accusative	ṛptham	ṛpthe	ṛpthāni
Instrumental	ṛpthena	ṛpthābhyām	ṛpthaiḥ
Dative	ṛpthāya	ṛpthābhyām	ṛpthebhyaḥ
Ablative	ṛpthāt	ṛpthābhyām	ṛpthebhyaḥ
Genitive	ṛpthasya	ṛpthayoḥ	ṛpthānām
Locative	ṛpthe	ṛpthayoḥ	ṛptheṣu

Compound ṛptha -

Adverb -ṛptham -ṛpthāt