Declension table of ?vardhitavya

Neuter	Singular	Dual	Plural
Nominative	vardhitavyam	vardhitavye	vardhitavyāni
Vocative	vardhitavya	vardhitavye	vardhitavyāni
Accusative	vardhitavyam	vardhitavye	vardhitavyāni
Instrumental	vardhitavyena	vardhitavyābhyām	vardhitavyaiḥ
Dative	vardhitavyāya	vardhitavyābhyām	vardhitavyebhyaḥ
Ablative	vardhitavyāt	vardhitavyābhyām	vardhitavyebhyaḥ
Genitive	vardhitavyasya	vardhitavyayoḥ	vardhitavyānām
Locative	vardhitavye	vardhitavyayoḥ	vardhitavyeṣu

Compound vardhitavya -

Adverb -vardhitavyam -vardhitavyāt