Declension table of ?viśvantara

Neuter	Singular	Dual	Plural
Nominative	viśvantaram	viśvantare	viśvantarāṇi
Vocative	viśvantara	viśvantare	viśvantarāṇi
Accusative	viśvantaram	viśvantare	viśvantarāṇi
Instrumental	viśvantareṇa	viśvantarābhyām	viśvantaraiḥ
Dative	viśvantarāya	viśvantarābhyām	viśvantarebhyaḥ
Ablative	viśvantarāt	viśvantarābhyām	viśvantarebhyaḥ
Genitive	viśvantarasya	viśvantarayoḥ	viśvantarāṇām
Locative	viśvantare	viśvantarayoḥ	viśvantareṣu

Compound viśvantara -

Adverb -viśvantaram -viśvantarāt