Declension table of ?atiśastra

Masculine	Singular	Dual	Plural
Nominative	atiśastraḥ	atiśastrau	atiśastrāḥ
Vocative	atiśastra	atiśastrau	atiśastrāḥ
Accusative	atiśastram	atiśastrau	atiśastrān
Instrumental	atiśastreṇa	atiśastrābhyām	atiśastraiḥ atiśastrebhiḥ
Dative	atiśastrāya	atiśastrābhyām	atiśastrebhyaḥ
Ablative	atiśastrāt	atiśastrābhyām	atiśastrebhyaḥ
Genitive	atiśastrasya	atiśastrayoḥ	atiśastrāṇām
Locative	atiśastre	atiśastrayoḥ	atiśastreṣu

Compound atiśastra -

Adverb -atiśastram -atiśastrāt