Declension table of ?dṛḍhāyudha

Masculine	Singular	Dual	Plural
Nominative	dṛḍhāyudhaḥ	dṛḍhāyudhau	dṛḍhāyudhāḥ
Vocative	dṛḍhāyudha	dṛḍhāyudhau	dṛḍhāyudhāḥ
Accusative	dṛḍhāyudham	dṛḍhāyudhau	dṛḍhāyudhān
Instrumental	dṛḍhāyudhena	dṛḍhāyudhābhyām	dṛḍhāyudhaiḥ dṛḍhāyudhebhiḥ
Dative	dṛḍhāyudhāya	dṛḍhāyudhābhyām	dṛḍhāyudhebhyaḥ
Ablative	dṛḍhāyudhāt	dṛḍhāyudhābhyām	dṛḍhāyudhebhyaḥ
Genitive	dṛḍhāyudhasya	dṛḍhāyudhayoḥ	dṛḍhāyudhānām
Locative	dṛḍhāyudhe	dṛḍhāyudhayoḥ	dṛḍhāyudheṣu

Compound dṛḍhāyudha -

Adverb -dṛḍhāyudham -dṛḍhāyudhāt