Declension table of ?nirava

Neuter	Singular	Dual	Plural
Nominative	niravam	nirave	niravāṇi
Vocative	nirava	nirave	niravāṇi
Accusative	niravam	nirave	niravāṇi
Instrumental	niraveṇa	niravābhyām	niravaiḥ
Dative	niravāya	niravābhyām	niravebhyaḥ
Ablative	niravāt	niravābhyām	niravebhyaḥ
Genitive	niravasya	niravayoḥ	niravāṇām
Locative	nirave	niravayoḥ	niraveṣu

Compound nirava -

Adverb -niravam -niravāt