Declension table of ?mahānidra

Neuter	Singular	Dual	Plural
Nominative	mahānidram	mahānidre	mahānidrāṇi
Vocative	mahānidra	mahānidre	mahānidrāṇi
Accusative	mahānidram	mahānidre	mahānidrāṇi
Instrumental	mahānidreṇa	mahānidrābhyām	mahānidraiḥ
Dative	mahānidrāya	mahānidrābhyām	mahānidrebhyaḥ
Ablative	mahānidrāt	mahānidrābhyām	mahānidrebhyaḥ
Genitive	mahānidrasya	mahānidrayoḥ	mahānidrāṇām
Locative	mahānidre	mahānidrayoḥ	mahānidreṣu

Compound mahānidra -

Adverb -mahānidram -mahānidrāt