Declension table of ?mattara

Masculine	Singular	Dual	Plural
Nominative	mattaraḥ	mattarau	mattarāḥ
Vocative	mattara	mattarau	mattarāḥ
Accusative	mattaram	mattarau	mattarān
Instrumental	mattareṇa	mattarābhyām	mattaraiḥ mattarebhiḥ
Dative	mattarāya	mattarābhyām	mattarebhyaḥ
Ablative	mattarāt	mattarābhyām	mattarebhyaḥ
Genitive	mattarasya	mattarayoḥ	mattarāṇām
Locative	mattare	mattarayoḥ	mattareṣu

Compound mattara -

Adverb -mattaram -mattarāt