Declension table of mahāsiddhi

Feminine	Singular	Dual	Plural
Nominative	mahāsiddhiḥ	mahāsiddhī	mahāsiddhayaḥ
Vocative	mahāsiddhe	mahāsiddhī	mahāsiddhayaḥ
Accusative	mahāsiddhim	mahāsiddhī	mahāsiddhīḥ
Instrumental	mahāsiddhyā	mahāsiddhibhyām	mahāsiddhibhiḥ
Dative	mahāsiddhyai mahāsiddhaye	mahāsiddhibhyām	mahāsiddhibhyaḥ
Ablative	mahāsiddhyāḥ mahāsiddheḥ	mahāsiddhibhyām	mahāsiddhibhyaḥ
Genitive	mahāsiddhyāḥ mahāsiddheḥ	mahāsiddhyoḥ	mahāsiddhīnām
Locative	mahāsiddhyām mahāsiddhau	mahāsiddhyoḥ	mahāsiddhiṣu

Compound mahāsiddhi -

Adverb -mahāsiddhi