Declension table of manthara

Masculine	Singular	Dual	Plural
Nominative	mantharaḥ	mantharau	mantharāḥ
Vocative	manthara	mantharau	mantharāḥ
Accusative	mantharam	mantharau	mantharān
Instrumental	manthareṇa	mantharābhyām	mantharaiḥ mantharebhiḥ
Dative	mantharāya	mantharābhyām	mantharebhyaḥ
Ablative	mantharāt	mantharābhyām	mantharebhyaḥ
Genitive	mantharasya	mantharayoḥ	mantharāṇām
Locative	manthare	mantharayoḥ	manthareṣu

Compound manthara -

Adverb -mantharam -mantharāt