Declension table of ?koṣṭhavat

Masculine	Singular	Dual	Plural
Nominative	koṣṭhavān	koṣṭhavantau	koṣṭhavantaḥ
Vocative	koṣṭhavan	koṣṭhavantau	koṣṭhavantaḥ
Accusative	koṣṭhavantam	koṣṭhavantau	koṣṭhavataḥ
Instrumental	koṣṭhavatā	koṣṭhavadbhyām	koṣṭhavadbhiḥ
Dative	koṣṭhavate	koṣṭhavadbhyām	koṣṭhavadbhyaḥ
Ablative	koṣṭhavataḥ	koṣṭhavadbhyām	koṣṭhavadbhyaḥ
Genitive	koṣṭhavataḥ	koṣṭhavatoḥ	koṣṭhavatām
Locative	koṣṭhavati	koṣṭhavatoḥ	koṣṭhavatsu

Compound koṣṭhavat -

Adverb -koṣṭhavantam