Declension table of ?vismitamānasa

Neuter	Singular	Dual	Plural
Nominative	vismitamānasam	vismitamānase	vismitamānasāni
Vocative	vismitamānasa	vismitamānase	vismitamānasāni
Accusative	vismitamānasam	vismitamānase	vismitamānasāni
Instrumental	vismitamānasena	vismitamānasābhyām	vismitamānasaiḥ
Dative	vismitamānasāya	vismitamānasābhyām	vismitamānasebhyaḥ
Ablative	vismitamānasāt	vismitamānasābhyām	vismitamānasebhyaḥ
Genitive	vismitamānasasya	vismitamānasayoḥ	vismitamānasānām
Locative	vismitamānase	vismitamānasayoḥ	vismitamānaseṣu

Compound vismitamānasa -

Adverb -vismitamānasam -vismitamānasāt