Declension table of ?pratighna

Neuter	Singular	Dual	Plural
Nominative	pratighnam	pratighne	pratighnāni
Vocative	pratighna	pratighne	pratighnāni
Accusative	pratighnam	pratighne	pratighnāni
Instrumental	pratighnena	pratighnābhyām	pratighnaiḥ
Dative	pratighnāya	pratighnābhyām	pratighnebhyaḥ
Ablative	pratighnāt	pratighnābhyām	pratighnebhyaḥ
Genitive	pratighnasya	pratighnayoḥ	pratighnānām
Locative	pratighne	pratighnayoḥ	pratighneṣu

Compound pratighna -

Adverb -pratighnam -pratighnāt