Declension table of ?antarvacana

Neuter	Singular	Dual	Plural
Nominative	antarvacanam	antarvacane	antarvacanāni
Vocative	antarvacana	antarvacane	antarvacanāni
Accusative	antarvacanam	antarvacane	antarvacanāni
Instrumental	antarvacanena	antarvacanābhyām	antarvacanaiḥ
Dative	antarvacanāya	antarvacanābhyām	antarvacanebhyaḥ
Ablative	antarvacanāt	antarvacanābhyām	antarvacanebhyaḥ
Genitive	antarvacanasya	antarvacanayoḥ	antarvacanānām
Locative	antarvacane	antarvacanayoḥ	antarvacaneṣu

Compound antarvacana -

Adverb -antarvacanam -antarvacanāt