Declension table of ?viśvadevya

Neuter	Singular	Dual	Plural
Nominative	viśvadevyam	viśvadevye	viśvadevyāni
Vocative	viśvadevya	viśvadevye	viśvadevyāni
Accusative	viśvadevyam	viśvadevye	viśvadevyāni
Instrumental	viśvadevyena	viśvadevyābhyām	viśvadevyaiḥ
Dative	viśvadevyāya	viśvadevyābhyām	viśvadevyebhyaḥ
Ablative	viśvadevyāt	viśvadevyābhyām	viśvadevyebhyaḥ
Genitive	viśvadevyasya	viśvadevyayoḥ	viśvadevyānām
Locative	viśvadevye	viśvadevyayoḥ	viśvadevyeṣu

Compound viśvadevya -

Adverb -viśvadevyam -viśvadevyāt