Declension table of ?nirnāśana

Masculine	Singular	Dual	Plural
Nominative	nirnāśanaḥ	nirnāśanau	nirnāśanāḥ
Vocative	nirnāśana	nirnāśanau	nirnāśanāḥ
Accusative	nirnāśanam	nirnāśanau	nirnāśanān
Instrumental	nirnāśanena	nirnāśanābhyām	nirnāśanaiḥ nirnāśanebhiḥ
Dative	nirnāśanāya	nirnāśanābhyām	nirnāśanebhyaḥ
Ablative	nirnāśanāt	nirnāśanābhyām	nirnāśanebhyaḥ
Genitive	nirnāśanasya	nirnāśanayoḥ	nirnāśanānām
Locative	nirnāśane	nirnāśanayoḥ	nirnāśaneṣu

Compound nirnāśana -

Adverb -nirnāśanam -nirnāśanāt