Declension table of ?vyāyudha

Neuter	Singular	Dual	Plural
Nominative	vyāyudham	vyāyudhe	vyāyudhāni
Vocative	vyāyudha	vyāyudhe	vyāyudhāni
Accusative	vyāyudham	vyāyudhe	vyāyudhāni
Instrumental	vyāyudhena	vyāyudhābhyām	vyāyudhaiḥ
Dative	vyāyudhāya	vyāyudhābhyām	vyāyudhebhyaḥ
Ablative	vyāyudhāt	vyāyudhābhyām	vyāyudhebhyaḥ
Genitive	vyāyudhasya	vyāyudhayoḥ	vyāyudhānām
Locative	vyāyudhe	vyāyudhayoḥ	vyāyudheṣu

Compound vyāyudha -

Adverb -vyāyudham -vyāyudhāt