Declension table of ?mahādhanus

Neuter	Singular	Dual	Plural
Nominative	mahādhanuḥ	mahādhanuṣī	mahādhanūṃṣi
Vocative	mahādhanuḥ	mahādhanuṣī	mahādhanūṃṣi
Accusative	mahādhanuḥ	mahādhanuṣī	mahādhanūṃṣi
Instrumental	mahādhanuṣā	mahādhanurbhyām	mahādhanurbhiḥ
Dative	mahādhanuṣe	mahādhanurbhyām	mahādhanurbhyaḥ
Ablative	mahādhanuṣaḥ	mahādhanurbhyām	mahādhanurbhyaḥ
Genitive	mahādhanuṣaḥ	mahādhanuṣoḥ	mahādhanuṣām
Locative	mahādhanuṣi	mahādhanuṣoḥ	mahādhanuḥṣu

Compound mahādhanus -

Adverb -mahādhanus