Declension table of ?vismaya

Neuter	Singular	Dual	Plural
Nominative	vismayam	vismaye	vismayāni
Vocative	vismaya	vismaye	vismayāni
Accusative	vismayam	vismaye	vismayāni
Instrumental	vismayena	vismayābhyām	vismayaiḥ
Dative	vismayāya	vismayābhyām	vismayebhyaḥ
Ablative	vismayāt	vismayābhyām	vismayebhyaḥ
Genitive	vismayasya	vismayayoḥ	vismayānām
Locative	vismaye	vismayayoḥ	vismayeṣu

Compound vismaya -

Adverb -vismayam -vismayāt