Declension table of ?antarvacana

Masculine	Singular	Dual	Plural
Nominative	antarvacanaḥ	antarvacanau	antarvacanāḥ
Vocative	antarvacana	antarvacanau	antarvacanāḥ
Accusative	antarvacanam	antarvacanau	antarvacanān
Instrumental	antarvacanena	antarvacanābhyām	antarvacanaiḥ antarvacanebhiḥ
Dative	antarvacanāya	antarvacanābhyām	antarvacanebhyaḥ
Ablative	antarvacanāt	antarvacanābhyām	antarvacanebhyaḥ
Genitive	antarvacanasya	antarvacanayoḥ	antarvacanānām
Locative	antarvacane	antarvacanayoḥ	antarvacaneṣu

Compound antarvacana -

Adverb -antarvacanam -antarvacanāt