Declension table of ?siṣidhvas

Neuter	Singular	Dual	Plural
Nominative	siṣidhvat	siṣidhvasī	siṣidhvaṃsi
Vocative	siṣidhvat	siṣidhvasī	siṣidhvaṃsi
Accusative	siṣidhvat	siṣidhvasī	siṣidhvaṃsi
Instrumental	siṣidhvasā	siṣidhvadbhyām	siṣidhvadbhiḥ
Dative	siṣidhvase	siṣidhvadbhyām	siṣidhvadbhyaḥ
Ablative	siṣidhvasaḥ	siṣidhvadbhyām	siṣidhvadbhyaḥ
Genitive	siṣidhvasaḥ	siṣidhvasoḥ	siṣidhvasām
Locative	siṣidhvasi	siṣidhvasoḥ	siṣidhvatsu

Compound siṣidhvad -

Adverb -siṣidhvad