Declension table of ?kūpayitavya

Neuter	Singular	Dual	Plural
Nominative	kūpayitavyam	kūpayitavye	kūpayitavyāni
Vocative	kūpayitavya	kūpayitavye	kūpayitavyāni
Accusative	kūpayitavyam	kūpayitavye	kūpayitavyāni
Instrumental	kūpayitavyena	kūpayitavyābhyām	kūpayitavyaiḥ
Dative	kūpayitavyāya	kūpayitavyābhyām	kūpayitavyebhyaḥ
Ablative	kūpayitavyāt	kūpayitavyābhyām	kūpayitavyebhyaḥ
Genitive	kūpayitavyasya	kūpayitavyayoḥ	kūpayitavyānām
Locative	kūpayitavye	kūpayitavyayoḥ	kūpayitavyeṣu

Compound kūpayitavya -

Adverb -kūpayitavyam -kūpayitavyāt