Declension table of ?vismaya

Masculine	Singular	Dual	Plural
Nominative	vismayaḥ	vismayau	vismayāḥ
Vocative	vismaya	vismayau	vismayāḥ
Accusative	vismayam	vismayau	vismayān
Instrumental	vismayena	vismayābhyām	vismayaiḥ vismayebhiḥ
Dative	vismayāya	vismayābhyām	vismayebhyaḥ
Ablative	vismayāt	vismayābhyām	vismayebhyaḥ
Genitive	vismayasya	vismayayoḥ	vismayānām
Locative	vismaye	vismayayoḥ	vismayeṣu

Compound vismaya -

Adverb -vismayam -vismayāt