Declension table of ?śivadaiva

Neuter	Singular	Dual	Plural
Nominative	śivadaivam	śivadaive	śivadaivāni
Vocative	śivadaiva	śivadaive	śivadaivāni
Accusative	śivadaivam	śivadaive	śivadaivāni
Instrumental	śivadaivena	śivadaivābhyām	śivadaivaiḥ
Dative	śivadaivāya	śivadaivābhyām	śivadaivebhyaḥ
Ablative	śivadaivāt	śivadaivābhyām	śivadaivebhyaḥ
Genitive	śivadaivasya	śivadaivayoḥ	śivadaivānām
Locative	śivadaive	śivadaivayoḥ	śivadaiveṣu

Compound śivadaiva -

Adverb -śivadaivam -śivadaivāt