Declension table of ?nirutsava

Neuter	Singular	Dual	Plural
Nominative	nirutsavam	nirutsave	nirutsavāni
Vocative	nirutsava	nirutsave	nirutsavāni
Accusative	nirutsavam	nirutsave	nirutsavāni
Instrumental	nirutsavena	nirutsavābhyām	nirutsavaiḥ
Dative	nirutsavāya	nirutsavābhyām	nirutsavebhyaḥ
Ablative	nirutsavāt	nirutsavābhyām	nirutsavebhyaḥ
Genitive	nirutsavasya	nirutsavayoḥ	nirutsavānām
Locative	nirutsave	nirutsavayoḥ	nirutsaveṣu

Compound nirutsava -

Adverb -nirutsavam -nirutsavāt