Declension table of ?siddhīśvara

Masculine	Singular	Dual	Plural
Nominative	siddhīśvaraḥ	siddhīśvarau	siddhīśvarāḥ
Vocative	siddhīśvara	siddhīśvarau	siddhīśvarāḥ
Accusative	siddhīśvaram	siddhīśvarau	siddhīśvarān
Instrumental	siddhīśvareṇa	siddhīśvarābhyām	siddhīśvaraiḥ siddhīśvarebhiḥ
Dative	siddhīśvarāya	siddhīśvarābhyām	siddhīśvarebhyaḥ
Ablative	siddhīśvarāt	siddhīśvarābhyām	siddhīśvarebhyaḥ
Genitive	siddhīśvarasya	siddhīśvarayoḥ	siddhīśvarāṇām
Locative	siddhīśvare	siddhīśvarayoḥ	siddhīśvareṣu

Compound siddhīśvara -

Adverb -siddhīśvaram -siddhīśvarāt