Declension table of ?tacchabdatva

Neuter	Singular	Dual	Plural
Nominative	tacchabdatvam	tacchabdatve	tacchabdatvāni
Vocative	tacchabdatva	tacchabdatve	tacchabdatvāni
Accusative	tacchabdatvam	tacchabdatve	tacchabdatvāni
Instrumental	tacchabdatvena	tacchabdatvābhyām	tacchabdatvaiḥ
Dative	tacchabdatvāya	tacchabdatvābhyām	tacchabdatvebhyaḥ
Ablative	tacchabdatvāt	tacchabdatvābhyām	tacchabdatvebhyaḥ
Genitive	tacchabdatvasya	tacchabdatvayoḥ	tacchabdatvānām
Locative	tacchabdatve	tacchabdatvayoḥ	tacchabdatveṣu

Compound tacchabdatva -

Adverb -tacchabdatvam -tacchabdatvāt