Declension table of ?dhrutavya

Neuter	Singular	Dual	Plural
Nominative	dhrutavyam	dhrutavye	dhrutavyāni
Vocative	dhrutavya	dhrutavye	dhrutavyāni
Accusative	dhrutavyam	dhrutavye	dhrutavyāni
Instrumental	dhrutavyena	dhrutavyābhyām	dhrutavyaiḥ
Dative	dhrutavyāya	dhrutavyābhyām	dhrutavyebhyaḥ
Ablative	dhrutavyāt	dhrutavyābhyām	dhrutavyebhyaḥ
Genitive	dhrutavyasya	dhrutavyayoḥ	dhrutavyānām
Locative	dhrutavye	dhrutavyayoḥ	dhrutavyeṣu

Compound dhrutavya -

Adverb -dhrutavyam -dhrutavyāt