Declension table of ?nirāstha

Neuter	Singular	Dual	Plural
Nominative	nirāstham	nirāsthe	nirāsthāni
Vocative	nirāstha	nirāsthe	nirāsthāni
Accusative	nirāstham	nirāsthe	nirāsthāni
Instrumental	nirāsthena	nirāsthābhyām	nirāsthaiḥ
Dative	nirāsthāya	nirāsthābhyām	nirāsthebhyaḥ
Ablative	nirāsthāt	nirāsthābhyām	nirāsthebhyaḥ
Genitive	nirāsthasya	nirāsthayoḥ	nirāsthānām
Locative	nirāsthe	nirāsthayoḥ	nirāstheṣu

Compound nirāstha -

Adverb -nirāstham -nirāsthāt