Declension table of ?śacitavya

Masculine	Singular	Dual	Plural
Nominative	śacitavyaḥ	śacitavyau	śacitavyāḥ
Vocative	śacitavya	śacitavyau	śacitavyāḥ
Accusative	śacitavyam	śacitavyau	śacitavyān
Instrumental	śacitavyena	śacitavyābhyām	śacitavyaiḥ śacitavyebhiḥ
Dative	śacitavyāya	śacitavyābhyām	śacitavyebhyaḥ
Ablative	śacitavyāt	śacitavyābhyām	śacitavyebhyaḥ
Genitive	śacitavyasya	śacitavyayoḥ	śacitavyānām
Locative	śacitavye	śacitavyayoḥ	śacitavyeṣu

Compound śacitavya -

Adverb -śacitavyam -śacitavyāt