Declension table of ?nivartakatva

Neuter	Singular	Dual	Plural
Nominative	nivartakatvam	nivartakatve	nivartakatvāni
Vocative	nivartakatva	nivartakatve	nivartakatvāni
Accusative	nivartakatvam	nivartakatve	nivartakatvāni
Instrumental	nivartakatvena	nivartakatvābhyām	nivartakatvaiḥ
Dative	nivartakatvāya	nivartakatvābhyām	nivartakatvebhyaḥ
Ablative	nivartakatvāt	nivartakatvābhyām	nivartakatvebhyaḥ
Genitive	nivartakatvasya	nivartakatvayoḥ	nivartakatvānām
Locative	nivartakatve	nivartakatvayoḥ	nivartakatveṣu

Compound nivartakatva -

Adverb -nivartakatvam -nivartakatvāt