Declension table of ?vajradruma

Masculine	Singular	Dual	Plural
Nominative	vajradrumaḥ	vajradrumau	vajradrumāḥ
Vocative	vajradruma	vajradrumau	vajradrumāḥ
Accusative	vajradrumam	vajradrumau	vajradrumān
Instrumental	vajradrumeṇa	vajradrumābhyām	vajradrumaiḥ vajradrumebhiḥ
Dative	vajradrumāya	vajradrumābhyām	vajradrumebhyaḥ
Ablative	vajradrumāt	vajradrumābhyām	vajradrumebhyaḥ
Genitive	vajradrumasya	vajradrumayoḥ	vajradrumāṇām
Locative	vajradrume	vajradrumayoḥ	vajradrumeṣu

Compound vajradruma -

Adverb -vajradrumam -vajradrumāt