Declension table of ?vyarthaka

Masculine	Singular	Dual	Plural
Nominative	vyarthakaḥ	vyarthakau	vyarthakāḥ
Vocative	vyarthaka	vyarthakau	vyarthakāḥ
Accusative	vyarthakam	vyarthakau	vyarthakān
Instrumental	vyarthakena	vyarthakābhyām	vyarthakaiḥ vyarthakebhiḥ
Dative	vyarthakāya	vyarthakābhyām	vyarthakebhyaḥ
Ablative	vyarthakāt	vyarthakābhyām	vyarthakebhyaḥ
Genitive	vyarthakasya	vyarthakayoḥ	vyarthakānām
Locative	vyarthake	vyarthakayoḥ	vyarthakeṣu

Compound vyarthaka -

Adverb -vyarthakam -vyarthakāt