Declension table of ?siṣvidvas

Masculine	Singular	Dual	Plural
Nominative	siṣvidvān	siṣvidvāṃsau	siṣvidvāṃsaḥ
Vocative	siṣvidvan	siṣvidvāṃsau	siṣvidvāṃsaḥ
Accusative	siṣvidvāṃsam	siṣvidvāṃsau	siṣviduṣaḥ
Instrumental	siṣviduṣā	siṣvidvadbhyām	siṣvidvadbhiḥ
Dative	siṣviduṣe	siṣvidvadbhyām	siṣvidvadbhyaḥ
Ablative	siṣviduṣaḥ	siṣvidvadbhyām	siṣvidvadbhyaḥ
Genitive	siṣviduṣaḥ	siṣviduṣoḥ	siṣviduṣām
Locative	siṣviduṣi	siṣviduṣoḥ	siṣvidvatsu

Compound siṣvidvat -

Adverb -siṣvidvas