Declension table of ?vacanatva

Neuter	Singular	Dual	Plural
Nominative	vacanatvam	vacanatve	vacanatvāni
Vocative	vacanatva	vacanatve	vacanatvāni
Accusative	vacanatvam	vacanatve	vacanatvāni
Instrumental	vacanatvena	vacanatvābhyām	vacanatvaiḥ
Dative	vacanatvāya	vacanatvābhyām	vacanatvebhyaḥ
Ablative	vacanatvāt	vacanatvābhyām	vacanatvebhyaḥ
Genitive	vacanatvasya	vacanatvayoḥ	vacanatvānām
Locative	vacanatve	vacanatvayoḥ	vacanatveṣu

Compound vacanatva -

Adverb -vacanatvam -vacanatvāt