Declension table of ?nivapta

Neuter	Singular	Dual	Plural
Nominative	nivaptam	nivapte	nivaptāni
Vocative	nivapta	nivapte	nivaptāni
Accusative	nivaptam	nivapte	nivaptāni
Instrumental	nivaptena	nivaptābhyām	nivaptaiḥ
Dative	nivaptāya	nivaptābhyām	nivaptebhyaḥ
Ablative	nivaptāt	nivaptābhyām	nivaptebhyaḥ
Genitive	nivaptasya	nivaptayoḥ	nivaptānām
Locative	nivapte	nivaptayoḥ	nivapteṣu

Compound nivapta -

Adverb -nivaptam -nivaptāt