Declension table of ?pratipakṣatva

Neuter	Singular	Dual	Plural
Nominative	pratipakṣatvam	pratipakṣatve	pratipakṣatvāni
Vocative	pratipakṣatva	pratipakṣatve	pratipakṣatvāni
Accusative	pratipakṣatvam	pratipakṣatve	pratipakṣatvāni
Instrumental	pratipakṣatvena	pratipakṣatvābhyām	pratipakṣatvaiḥ
Dative	pratipakṣatvāya	pratipakṣatvābhyām	pratipakṣatvebhyaḥ
Ablative	pratipakṣatvāt	pratipakṣatvābhyām	pratipakṣatvebhyaḥ
Genitive	pratipakṣatvasya	pratipakṣatvayoḥ	pratipakṣatvānām
Locative	pratipakṣatve	pratipakṣatvayoḥ	pratipakṣatveṣu

Compound pratipakṣatva -

Adverb -pratipakṣatvam -pratipakṣatvāt