Declension table of ?kalptavya

Neuter	Singular	Dual	Plural
Nominative	kalptavyam	kalptavye	kalptavyāni
Vocative	kalptavya	kalptavye	kalptavyāni
Accusative	kalptavyam	kalptavye	kalptavyāni
Instrumental	kalptavyena	kalptavyābhyām	kalptavyaiḥ
Dative	kalptavyāya	kalptavyābhyām	kalptavyebhyaḥ
Ablative	kalptavyāt	kalptavyābhyām	kalptavyebhyaḥ
Genitive	kalptavyasya	kalptavyayoḥ	kalptavyānām
Locative	kalptavye	kalptavyayoḥ	kalptavyeṣu

Compound kalptavya -

Adverb -kalptavyam -kalptavyāt