Declension table of ?siṣvidvas

Neuter	Singular	Dual	Plural
Nominative	siṣvidvat	siṣviduṣī	siṣvidvāṃsi
Vocative	siṣvidvat	siṣviduṣī	siṣvidvāṃsi
Accusative	siṣvidvat	siṣviduṣī	siṣvidvāṃsi
Instrumental	siṣviduṣā	siṣvidvadbhyām	siṣvidvadbhiḥ
Dative	siṣviduṣe	siṣvidvadbhyām	siṣvidvadbhyaḥ
Ablative	siṣviduṣaḥ	siṣvidvadbhyām	siṣvidvadbhyaḥ
Genitive	siṣviduṣaḥ	siṣviduṣoḥ	siṣviduṣām
Locative	siṣviduṣi	siṣviduṣoḥ	siṣvidvatsu

Compound siṣvidvat -

Adverb -siṣvidvat