Declension table of ?dṛḍhasamādhāna

Masculine	Singular	Dual	Plural
Nominative	dṛḍhasamādhānaḥ	dṛḍhasamādhānau	dṛḍhasamādhānāḥ
Vocative	dṛḍhasamādhāna	dṛḍhasamādhānau	dṛḍhasamādhānāḥ
Accusative	dṛḍhasamādhānam	dṛḍhasamādhānau	dṛḍhasamādhānān
Instrumental	dṛḍhasamādhānena	dṛḍhasamādhānābhyām	dṛḍhasamādhānaiḥ dṛḍhasamādhānebhiḥ
Dative	dṛḍhasamādhānāya	dṛḍhasamādhānābhyām	dṛḍhasamādhānebhyaḥ
Ablative	dṛḍhasamādhānāt	dṛḍhasamādhānābhyām	dṛḍhasamādhānebhyaḥ
Genitive	dṛḍhasamādhānasya	dṛḍhasamādhānayoḥ	dṛḍhasamādhānānām
Locative	dṛḍhasamādhāne	dṛḍhasamādhānayoḥ	dṛḍhasamādhāneṣu

Compound dṛḍhasamādhāna -

Adverb -dṛḍhasamādhānam -dṛḍhasamādhānāt