Declension table of ?mahārcis

Neuter	Singular	Dual	Plural
Nominative	mahārciḥ	mahārciṣī	mahārcīṃṣi
Vocative	mahārciḥ	mahārciṣī	mahārcīṃṣi
Accusative	mahārciḥ	mahārciṣī	mahārcīṃṣi
Instrumental	mahārciṣā	mahārcirbhyām	mahārcirbhiḥ
Dative	mahārciṣe	mahārcirbhyām	mahārcirbhyaḥ
Ablative	mahārciṣaḥ	mahārcirbhyām	mahārcirbhyaḥ
Genitive	mahārciṣaḥ	mahārciṣoḥ	mahārciṣām
Locative	mahārciṣi	mahārciṣoḥ	mahārciḥṣu

Compound mahārcis -

Adverb -mahārcis