Declension table of ?siddheśa

Masculine	Singular	Dual	Plural
Nominative	siddheśaḥ	siddheśau	siddheśāḥ
Vocative	siddheśa	siddheśau	siddheśāḥ
Accusative	siddheśam	siddheśau	siddheśān
Instrumental	siddheśena	siddheśābhyām	siddheśaiḥ siddheśebhiḥ
Dative	siddheśāya	siddheśābhyām	siddheśebhyaḥ
Ablative	siddheśāt	siddheśābhyām	siddheśebhyaḥ
Genitive	siddheśasya	siddheśayoḥ	siddheśānām
Locative	siddheśe	siddheśayoḥ	siddheśeṣu

Compound siddheśa -

Adverb -siddheśam -siddheśāt