Declension table of ?mahārcis

Masculine	Singular	Dual	Plural
Nominative	mahārciḥ	mahārciṣau	mahārciṣaḥ
Vocative	mahārciḥ	mahārciṣau	mahārciṣaḥ
Accusative	mahārciṣam	mahārciṣau	mahārciṣaḥ
Instrumental	mahārciṣā	mahārcirbhyām	mahārcirbhiḥ
Dative	mahārciṣe	mahārcirbhyām	mahārcirbhyaḥ
Ablative	mahārciṣaḥ	mahārcirbhyām	mahārcirbhyaḥ
Genitive	mahārciṣaḥ	mahārciṣoḥ	mahārciṣām
Locative	mahārciṣi	mahārciṣoḥ	mahārciḥṣu

Compound mahārcis -

Adverb -mahārcis