Declension table of ?radāyudha

Masculine	Singular	Dual	Plural
Nominative	radāyudhaḥ	radāyudhau	radāyudhāḥ
Vocative	radāyudha	radāyudhau	radāyudhāḥ
Accusative	radāyudham	radāyudhau	radāyudhān
Instrumental	radāyudhena	radāyudhābhyām	radāyudhaiḥ radāyudhebhiḥ
Dative	radāyudhāya	radāyudhābhyām	radāyudhebhyaḥ
Ablative	radāyudhāt	radāyudhābhyām	radāyudhebhyaḥ
Genitive	radāyudhasya	radāyudhayoḥ	radāyudhānām
Locative	radāyudhe	radāyudhayoḥ	radāyudheṣu

Compound radāyudha -

Adverb -radāyudham -radāyudhāt