Declension table of ?vanitavya

Neuter	Singular	Dual	Plural
Nominative	vanitavyam	vanitavye	vanitavyāni
Vocative	vanitavya	vanitavye	vanitavyāni
Accusative	vanitavyam	vanitavye	vanitavyāni
Instrumental	vanitavyena	vanitavyābhyām	vanitavyaiḥ
Dative	vanitavyāya	vanitavyābhyām	vanitavyebhyaḥ
Ablative	vanitavyāt	vanitavyābhyām	vanitavyebhyaḥ
Genitive	vanitavyasya	vanitavyayoḥ	vanitavyānām
Locative	vanitavye	vanitavyayoḥ	vanitavyeṣu

Compound vanitavya -

Adverb -vanitavyam -vanitavyāt