Declension table of ?mahāketu

Masculine	Singular	Dual	Plural
Nominative	mahāketuḥ	mahāketū	mahāketavaḥ
Vocative	mahāketo	mahāketū	mahāketavaḥ
Accusative	mahāketum	mahāketū	mahāketūn
Instrumental	mahāketunā	mahāketubhyām	mahāketubhiḥ
Dative	mahāketave	mahāketubhyām	mahāketubhyaḥ
Ablative	mahāketoḥ	mahāketubhyām	mahāketubhyaḥ
Genitive	mahāketoḥ	mahāketvoḥ	mahāketūnām
Locative	mahāketau	mahāketvoḥ	mahāketuṣu

Compound mahāketu -

Adverb -mahāketu