Declension table of ?dṛḍhasamādhāna

Neuter	Singular	Dual	Plural
Nominative	dṛḍhasamādhānam	dṛḍhasamādhāne	dṛḍhasamādhānāni
Vocative	dṛḍhasamādhāna	dṛḍhasamādhāne	dṛḍhasamādhānāni
Accusative	dṛḍhasamādhānam	dṛḍhasamādhāne	dṛḍhasamādhānāni
Instrumental	dṛḍhasamādhānena	dṛḍhasamādhānābhyām	dṛḍhasamādhānaiḥ
Dative	dṛḍhasamādhānāya	dṛḍhasamādhānābhyām	dṛḍhasamādhānebhyaḥ
Ablative	dṛḍhasamādhānāt	dṛḍhasamādhānābhyām	dṛḍhasamādhānebhyaḥ
Genitive	dṛḍhasamādhānasya	dṛḍhasamādhānayoḥ	dṛḍhasamādhānānām
Locative	dṛḍhasamādhāne	dṛḍhasamādhānayoḥ	dṛḍhasamādhāneṣu

Compound dṛḍhasamādhāna -

Adverb -dṛḍhasamādhānam -dṛḍhasamādhānāt