Declension table of ?hārdikya

Masculine	Singular	Dual	Plural
Nominative	hārdikyaḥ	hārdikyau	hārdikyāḥ
Vocative	hārdikya	hārdikyau	hārdikyāḥ
Accusative	hārdikyam	hārdikyau	hārdikyān
Instrumental	hārdikyena	hārdikyābhyām	hārdikyaiḥ hārdikyebhiḥ
Dative	hārdikyāya	hārdikyābhyām	hārdikyebhyaḥ
Ablative	hārdikyāt	hārdikyābhyām	hārdikyebhyaḥ
Genitive	hārdikyasya	hārdikyayoḥ	hārdikyānām
Locative	hārdikye	hārdikyayoḥ	hārdikyeṣu

Compound hārdikya -

Adverb -hārdikyam -hārdikyāt