Declension table of ?yuvāvat

Masculine	Singular	Dual	Plural
Nominative	yuvāvān	yuvāvantau	yuvāvantaḥ
Vocative	yuvāvan	yuvāvantau	yuvāvantaḥ
Accusative	yuvāvantam	yuvāvantau	yuvāvataḥ
Instrumental	yuvāvatā	yuvāvadbhyām	yuvāvadbhiḥ
Dative	yuvāvate	yuvāvadbhyām	yuvāvadbhyaḥ
Ablative	yuvāvataḥ	yuvāvadbhyām	yuvāvadbhyaḥ
Genitive	yuvāvataḥ	yuvāvatoḥ	yuvāvatām
Locative	yuvāvati	yuvāvatoḥ	yuvāvatsu

Compound yuvāvat -

Adverb -yuvāvantam