Declension table of ?nirātmavat

Masculine	Singular	Dual	Plural
Nominative	nirātmavān	nirātmavantau	nirātmavantaḥ
Vocative	nirātmavan	nirātmavantau	nirātmavantaḥ
Accusative	nirātmavantam	nirātmavantau	nirātmavataḥ
Instrumental	nirātmavatā	nirātmavadbhyām	nirātmavadbhiḥ
Dative	nirātmavate	nirātmavadbhyām	nirātmavadbhyaḥ
Ablative	nirātmavataḥ	nirātmavadbhyām	nirātmavadbhyaḥ
Genitive	nirātmavataḥ	nirātmavatoḥ	nirātmavatām
Locative	nirātmavati	nirātmavatoḥ	nirātmavatsu

Compound nirātmavat -

Adverb -nirātmavantam