Declension table of ?mahāniraya

Masculine	Singular	Dual	Plural
Nominative	mahānirayaḥ	mahānirayau	mahānirayāḥ
Vocative	mahāniraya	mahānirayau	mahānirayāḥ
Accusative	mahānirayam	mahānirayau	mahānirayān
Instrumental	mahānirayeṇa	mahānirayābhyām	mahānirayaiḥ mahānirayebhiḥ
Dative	mahānirayāya	mahānirayābhyām	mahānirayebhyaḥ
Ablative	mahānirayāt	mahānirayābhyām	mahānirayebhyaḥ
Genitive	mahānirayasya	mahānirayayoḥ	mahānirayāṇām
Locative	mahāniraye	mahānirayayoḥ	mahānirayeṣu

Compound mahāniraya -

Adverb -mahānirayam -mahānirayāt