Declension table of ?atiśasta

Neuter	Singular	Dual	Plural
Nominative	atiśastam	atiśaste	atiśastāni
Vocative	atiśasta	atiśaste	atiśastāni
Accusative	atiśastam	atiśaste	atiśastāni
Instrumental	atiśastena	atiśastābhyām	atiśastaiḥ
Dative	atiśastāya	atiśastābhyām	atiśastebhyaḥ
Ablative	atiśastāt	atiśastābhyām	atiśastebhyaḥ
Genitive	atiśastasya	atiśastayoḥ	atiśastānām
Locative	atiśaste	atiśastayoḥ	atiśasteṣu

Compound atiśasta -

Adverb -atiśastam -atiśastāt