Declension table of ?rūṣṭavat

Masculine	Singular	Dual	Plural
Nominative	rūṣṭavān	rūṣṭavantau	rūṣṭavantaḥ
Vocative	rūṣṭavan	rūṣṭavantau	rūṣṭavantaḥ
Accusative	rūṣṭavantam	rūṣṭavantau	rūṣṭavataḥ
Instrumental	rūṣṭavatā	rūṣṭavadbhyām	rūṣṭavadbhiḥ
Dative	rūṣṭavate	rūṣṭavadbhyām	rūṣṭavadbhyaḥ
Ablative	rūṣṭavataḥ	rūṣṭavadbhyām	rūṣṭavadbhyaḥ
Genitive	rūṣṭavataḥ	rūṣṭavatoḥ	rūṣṭavatām
Locative	rūṣṭavati	rūṣṭavatoḥ	rūṣṭavatsu

Compound rūṣṭavat -

Adverb -rūṣṭavantam