Declension table of ?vasantamahotsava

Masculine	Singular	Dual	Plural
Nominative	vasantamahotsavaḥ	vasantamahotsavau	vasantamahotsavāḥ
Vocative	vasantamahotsava	vasantamahotsavau	vasantamahotsavāḥ
Accusative	vasantamahotsavam	vasantamahotsavau	vasantamahotsavān
Instrumental	vasantamahotsavena	vasantamahotsavābhyām	vasantamahotsavaiḥ vasantamahotsavebhiḥ
Dative	vasantamahotsavāya	vasantamahotsavābhyām	vasantamahotsavebhyaḥ
Ablative	vasantamahotsavāt	vasantamahotsavābhyām	vasantamahotsavebhyaḥ
Genitive	vasantamahotsavasya	vasantamahotsavayoḥ	vasantamahotsavānām
Locative	vasantamahotsave	vasantamahotsavayoḥ	vasantamahotsaveṣu

Compound vasantamahotsava -

Adverb -vasantamahotsavam -vasantamahotsavāt