Declension table of ?dvayavādin

Neuter	Singular	Dual	Plural
Nominative	dvayavādi	dvayavādinī	dvayavādīni
Vocative	dvayavādin dvayavādi	dvayavādinī	dvayavādīni
Accusative	dvayavādi	dvayavādinī	dvayavādīni
Instrumental	dvayavādinā	dvayavādibhyām	dvayavādibhiḥ
Dative	dvayavādine	dvayavādibhyām	dvayavādibhyaḥ
Ablative	dvayavādinaḥ	dvayavādibhyām	dvayavādibhyaḥ
Genitive	dvayavādinaḥ	dvayavādinoḥ	dvayavādinām
Locative	dvayavādini	dvayavādinoḥ	dvayavādiṣu

Compound dvayavādi -

Adverb -dvayavādi