Declension table of ?rumra

Masculine	Singular	Dual	Plural
Nominative	rumraḥ	rumrau	rumrāḥ
Vocative	rumra	rumrau	rumrāḥ
Accusative	rumram	rumrau	rumrān
Instrumental	rumreṇa	rumrābhyām	rumraiḥ rumrebhiḥ
Dative	rumrāya	rumrābhyām	rumrebhyaḥ
Ablative	rumrāt	rumrābhyām	rumrebhyaḥ
Genitive	rumrasya	rumrayoḥ	rumrāṇām
Locative	rumre	rumrayoḥ	rumreṣu

Compound rumra -

Adverb -rumram -rumrāt