Declension table of ?puruniḥṣidhvan

Neuter	Singular	Dual	Plural
Nominative	puruniḥṣidhva	puruniḥṣidhvnī puruniḥṣidhvanī	puruniḥṣidhvāni
Vocative	puruniḥṣidhvan puruniḥṣidhva	puruniḥṣidhvnī puruniḥṣidhvanī	puruniḥṣidhvāni
Accusative	puruniḥṣidhva	puruniḥṣidhvnī puruniḥṣidhvanī	puruniḥṣidhvāni
Instrumental	puruniḥṣidhvanā	puruniḥṣidhvabhyām	puruniḥṣidhvabhiḥ
Dative	puruniḥṣidhvane	puruniḥṣidhvabhyām	puruniḥṣidhvabhyaḥ
Ablative	puruniḥṣidhvanaḥ	puruniḥṣidhvabhyām	puruniḥṣidhvabhyaḥ
Genitive	puruniḥṣidhvanaḥ	puruniḥṣidhvanoḥ	puruniḥṣidhvanām
Locative	puruniḥṣidhvani	puruniḥṣidhvanoḥ	puruniḥṣidhvasu

Compound puruniḥṣidhva -

Adverb -puruniḥṣidhva -puruniḥṣidhvam