Declension table of ?mahānidra

Masculine	Singular	Dual	Plural
Nominative	mahānidraḥ	mahānidrau	mahānidrāḥ
Vocative	mahānidra	mahānidrau	mahānidrāḥ
Accusative	mahānidram	mahānidrau	mahānidrān
Instrumental	mahānidreṇa	mahānidrābhyām	mahānidraiḥ mahānidrebhiḥ
Dative	mahānidrāya	mahānidrābhyām	mahānidrebhyaḥ
Ablative	mahānidrāt	mahānidrābhyām	mahānidrebhyaḥ
Genitive	mahānidrasya	mahānidrayoḥ	mahānidrāṇām
Locative	mahānidre	mahānidrayoḥ	mahānidreṣu

Compound mahānidra -

Adverb -mahānidram -mahānidrāt