Declension table of ?adhvartavya

Neuter	Singular	Dual	Plural
Nominative	adhvartavyam	adhvartavye	adhvartavyāni
Vocative	adhvartavya	adhvartavye	adhvartavyāni
Accusative	adhvartavyam	adhvartavye	adhvartavyāni
Instrumental	adhvartavyena	adhvartavyābhyām	adhvartavyaiḥ
Dative	adhvartavyāya	adhvartavyābhyām	adhvartavyebhyaḥ
Ablative	adhvartavyāt	adhvartavyābhyām	adhvartavyebhyaḥ
Genitive	adhvartavyasya	adhvartavyayoḥ	adhvartavyānām
Locative	adhvartavye	adhvartavyayoḥ	adhvartavyeṣu

Compound adhvartavya -

Adverb -adhvartavyam -adhvartavyāt