Declension table of ?mahāmatta

Neuter	Singular	Dual	Plural
Nominative	mahāmattam	mahāmatte	mahāmattāni
Vocative	mahāmatta	mahāmatte	mahāmattāni
Accusative	mahāmattam	mahāmatte	mahāmattāni
Instrumental	mahāmattena	mahāmattābhyām	mahāmattaiḥ
Dative	mahāmattāya	mahāmattābhyām	mahāmattebhyaḥ
Ablative	mahāmattāt	mahāmattābhyām	mahāmattebhyaḥ
Genitive	mahāmattasya	mahāmattayoḥ	mahāmattānām
Locative	mahāmatte	mahāmattayoḥ	mahāmatteṣu

Compound mahāmatta -

Adverb -mahāmattam -mahāmattāt