Declension table of mahākāvya

Neuter	Singular	Dual	Plural
Nominative	mahākāvyam	mahākāvye	mahākāvyāni
Vocative	mahākāvya	mahākāvye	mahākāvyāni
Accusative	mahākāvyam	mahākāvye	mahākāvyāni
Instrumental	mahākāvyena	mahākāvyābhyām	mahākāvyaiḥ
Dative	mahākāvyāya	mahākāvyābhyām	mahākāvyebhyaḥ
Ablative	mahākāvyāt	mahākāvyābhyām	mahākāvyebhyaḥ
Genitive	mahākāvyasya	mahākāvyayoḥ	mahākāvyānām
Locative	mahākāvye	mahākāvyayoḥ	mahākāvyeṣu

Compound mahākāvya -

Adverb -mahākāvyam -mahākāvyāt