Declension table of ?harṣat

Masculine	Singular	Dual	Plural
Nominative	harṣan	harṣantau	harṣantaḥ
Vocative	harṣan	harṣantau	harṣantaḥ
Accusative	harṣantam	harṣantau	harṣataḥ
Instrumental	harṣatā	harṣadbhyām	harṣadbhiḥ
Dative	harṣate	harṣadbhyām	harṣadbhyaḥ
Ablative	harṣataḥ	harṣadbhyām	harṣadbhyaḥ
Genitive	harṣataḥ	harṣatoḥ	harṣatām
Locative	harṣati	harṣatoḥ	harṣatsu

Compound harṣat -

Adverb -harṣantam