Declension table of ?bhāvavat

Masculine	Singular	Dual	Plural
Nominative	bhāvavān	bhāvavantau	bhāvavantaḥ
Vocative	bhāvavan	bhāvavantau	bhāvavantaḥ
Accusative	bhāvavantam	bhāvavantau	bhāvavataḥ
Instrumental	bhāvavatā	bhāvavadbhyām	bhāvavadbhiḥ
Dative	bhāvavate	bhāvavadbhyām	bhāvavadbhyaḥ
Ablative	bhāvavataḥ	bhāvavadbhyām	bhāvavadbhyaḥ
Genitive	bhāvavataḥ	bhāvavatoḥ	bhāvavatām
Locative	bhāvavati	bhāvavatoḥ	bhāvavatsu

Compound bhāvavat -

Adverb -bhāvavantam