Declension table of ?peṇitavya

Neuter	Singular	Dual	Plural
Nominative	peṇitavyam	peṇitavye	peṇitavyāni
Vocative	peṇitavya	peṇitavye	peṇitavyāni
Accusative	peṇitavyam	peṇitavye	peṇitavyāni
Instrumental	peṇitavyena	peṇitavyābhyām	peṇitavyaiḥ
Dative	peṇitavyāya	peṇitavyābhyām	peṇitavyebhyaḥ
Ablative	peṇitavyāt	peṇitavyābhyām	peṇitavyebhyaḥ
Genitive	peṇitavyasya	peṇitavyayoḥ	peṇitavyānām
Locative	peṇitavye	peṇitavyayoḥ	peṇitavyeṣu

Compound peṇitavya -

Adverb -peṇitavyam -peṇitavyāt