Declension table of ?dṛḍhajñāna

Neuter	Singular	Dual	Plural
Nominative	dṛḍhajñānam	dṛḍhajñāne	dṛḍhajñānāni
Vocative	dṛḍhajñāna	dṛḍhajñāne	dṛḍhajñānāni
Accusative	dṛḍhajñānam	dṛḍhajñāne	dṛḍhajñānāni
Instrumental	dṛḍhajñānena	dṛḍhajñānābhyām	dṛḍhajñānaiḥ
Dative	dṛḍhajñānāya	dṛḍhajñānābhyām	dṛḍhajñānebhyaḥ
Ablative	dṛḍhajñānāt	dṛḍhajñānābhyām	dṛḍhajñānebhyaḥ
Genitive	dṛḍhajñānasya	dṛḍhajñānayoḥ	dṛḍhajñānānām
Locative	dṛḍhajñāne	dṛḍhajñānayoḥ	dṛḍhajñāneṣu

Compound dṛḍhajñāna -

Adverb -dṛḍhajñānam -dṛḍhajñānāt