Declension table of ?dṛḍhanetra

Masculine	Singular	Dual	Plural
Nominative	dṛḍhanetraḥ	dṛḍhanetrau	dṛḍhanetrāḥ
Vocative	dṛḍhanetra	dṛḍhanetrau	dṛḍhanetrāḥ
Accusative	dṛḍhanetram	dṛḍhanetrau	dṛḍhanetrān
Instrumental	dṛḍhanetreṇa	dṛḍhanetrābhyām	dṛḍhanetraiḥ dṛḍhanetrebhiḥ
Dative	dṛḍhanetrāya	dṛḍhanetrābhyām	dṛḍhanetrebhyaḥ
Ablative	dṛḍhanetrāt	dṛḍhanetrābhyām	dṛḍhanetrebhyaḥ
Genitive	dṛḍhanetrasya	dṛḍhanetrayoḥ	dṛḍhanetrāṇām
Locative	dṛḍhanetre	dṛḍhanetrayoḥ	dṛḍhanetreṣu

Compound dṛḍhanetra -

Adverb -dṛḍhanetram -dṛḍhanetrāt