Declension table of ?kaṭṭhavat

Masculine	Singular	Dual	Plural
Nominative	kaṭṭhavān	kaṭṭhavantau	kaṭṭhavantaḥ
Vocative	kaṭṭhavan	kaṭṭhavantau	kaṭṭhavantaḥ
Accusative	kaṭṭhavantam	kaṭṭhavantau	kaṭṭhavataḥ
Instrumental	kaṭṭhavatā	kaṭṭhavadbhyām	kaṭṭhavadbhiḥ
Dative	kaṭṭhavate	kaṭṭhavadbhyām	kaṭṭhavadbhyaḥ
Ablative	kaṭṭhavataḥ	kaṭṭhavadbhyām	kaṭṭhavadbhyaḥ
Genitive	kaṭṭhavataḥ	kaṭṭhavatoḥ	kaṭṭhavatām
Locative	kaṭṭhavati	kaṭṭhavatoḥ	kaṭṭhavatsu

Compound kaṭṭhavat -

Adverb -kaṭṭhavantam