Declension table of ?nirastra

Masculine	Singular	Dual	Plural
Nominative	nirastraḥ	nirastrau	nirastrāḥ
Vocative	nirastra	nirastrau	nirastrāḥ
Accusative	nirastram	nirastrau	nirastrān
Instrumental	nirastreṇa	nirastrābhyām	nirastraiḥ nirastrebhiḥ
Dative	nirastrāya	nirastrābhyām	nirastrebhyaḥ
Ablative	nirastrāt	nirastrābhyām	nirastrebhyaḥ
Genitive	nirastrasya	nirastrayoḥ	nirastrāṇām
Locative	nirastre	nirastrayoḥ	nirastreṣu

Compound nirastra -

Adverb -nirastram -nirastrāt