Declension table of ?aviṣyu

Masculine	Singular	Dual	Plural
Nominative	aviṣyuḥ	aviṣyū	aviṣyavaḥ
Vocative	aviṣyo	aviṣyū	aviṣyavaḥ
Accusative	aviṣyum	aviṣyū	aviṣyūn
Instrumental	aviṣyuṇā	aviṣyubhyām	aviṣyubhiḥ
Dative	aviṣyave	aviṣyubhyām	aviṣyubhyaḥ
Ablative	aviṣyoḥ	aviṣyubhyām	aviṣyubhyaḥ
Genitive	aviṣyoḥ	aviṣyvoḥ	aviṣyūṇām
Locative	aviṣyau	aviṣyvoḥ	aviṣyuṣu

Compound aviṣyu -

Adverb -aviṣyu