Declension table of siddhida

Masculine	Singular	Dual	Plural
Nominative	siddhidaḥ	siddhidau	siddhidāḥ
Vocative	siddhida	siddhidau	siddhidāḥ
Accusative	siddhidam	siddhidau	siddhidān
Instrumental	siddhidena	siddhidābhyām	siddhidaiḥ siddhidebhiḥ
Dative	siddhidāya	siddhidābhyām	siddhidebhyaḥ
Ablative	siddhidāt	siddhidābhyām	siddhidebhyaḥ
Genitive	siddhidasya	siddhidayoḥ	siddhidānām
Locative	siddhide	siddhidayoḥ	siddhideṣu

Compound siddhida -

Adverb -siddhidam -siddhidāt