Declension table of ?nirṛtha

Masculine	Singular	Dual	Plural
Nominative	nirṛthaḥ	nirṛthau	nirṛthāḥ
Vocative	nirṛtha	nirṛthau	nirṛthāḥ
Accusative	nirṛtham	nirṛthau	nirṛthān
Instrumental	nirṛthena	nirṛthābhyām	nirṛthaiḥ nirṛthebhiḥ
Dative	nirṛthāya	nirṛthābhyām	nirṛthebhyaḥ
Ablative	nirṛthāt	nirṛthābhyām	nirṛthebhyaḥ
Genitive	nirṛthasya	nirṛthayoḥ	nirṛthānām
Locative	nirṛthe	nirṛthayoḥ	nirṛtheṣu

Compound nirṛtha -

Adverb -nirṛtham -nirṛthāt