Declension table of ?dṛḍhakārin

Masculine	Singular	Dual	Plural
Nominative	dṛḍhakārī	dṛḍhakāriṇau	dṛḍhakāriṇaḥ
Vocative	dṛḍhakārin	dṛḍhakāriṇau	dṛḍhakāriṇaḥ
Accusative	dṛḍhakāriṇam	dṛḍhakāriṇau	dṛḍhakāriṇaḥ
Instrumental	dṛḍhakāriṇā	dṛḍhakāribhyām	dṛḍhakāribhiḥ
Dative	dṛḍhakāriṇe	dṛḍhakāribhyām	dṛḍhakāribhyaḥ
Ablative	dṛḍhakāriṇaḥ	dṛḍhakāribhyām	dṛḍhakāribhyaḥ
Genitive	dṛḍhakāriṇaḥ	dṛḍhakāriṇoḥ	dṛḍhakāriṇām
Locative	dṛḍhakāriṇi	dṛḍhakāriṇoḥ	dṛḍhakāriṣu

Compound dṛḍhakāri -

Adverb -dṛḍhakāri