Declension table of ?hārdin

Masculine	Singular	Dual	Plural
Nominative	hārdī	hārdinau	hārdinaḥ
Vocative	hārdin	hārdinau	hārdinaḥ
Accusative	hārdinam	hārdinau	hārdinaḥ
Instrumental	hārdinā	hārdibhyām	hārdibhiḥ
Dative	hārdine	hārdibhyām	hārdibhyaḥ
Ablative	hārdinaḥ	hārdibhyām	hārdibhyaḥ
Genitive	hārdinaḥ	hārdinoḥ	hārdinām
Locative	hārdini	hārdinoḥ	hārdiṣu

Compound hārdi -

Adverb -hārdi