Declension table of ?cṛttavat

Masculine	Singular	Dual	Plural
Nominative	cṛttavān	cṛttavantau	cṛttavantaḥ
Vocative	cṛttavan	cṛttavantau	cṛttavantaḥ
Accusative	cṛttavantam	cṛttavantau	cṛttavataḥ
Instrumental	cṛttavatā	cṛttavadbhyām	cṛttavadbhiḥ
Dative	cṛttavate	cṛttavadbhyām	cṛttavadbhyaḥ
Ablative	cṛttavataḥ	cṛttavadbhyām	cṛttavadbhyaḥ
Genitive	cṛttavataḥ	cṛttavatoḥ	cṛttavatām
Locative	cṛttavati	cṛttavatoḥ	cṛttavatsu

Compound cṛttavat -

Adverb -cṛttavantam