Declension table of ?nirbhagna

Masculine	Singular	Dual	Plural
Nominative	nirbhagnaḥ	nirbhagnau	nirbhagnāḥ
Vocative	nirbhagna	nirbhagnau	nirbhagnāḥ
Accusative	nirbhagnam	nirbhagnau	nirbhagnān
Instrumental	nirbhagnena	nirbhagnābhyām	nirbhagnaiḥ
Dative	nirbhagnāya	nirbhagnābhyām	nirbhagnebhyaḥ
Ablative	nirbhagnāt	nirbhagnābhyām	nirbhagnebhyaḥ
Genitive	nirbhagnasya	nirbhagnayoḥ	nirbhagnānām
Locative	nirbhagne	nirbhagnayoḥ	nirbhagneṣu

Compound nirbhagna -

Adverb -nirbhagnam -nirbhagnāt