Declension table of ?anarthakara

Masculine	Singular	Dual	Plural
Nominative	anarthakaraḥ	anarthakarau	anarthakarāḥ
Vocative	anarthakara	anarthakarau	anarthakarāḥ
Accusative	anarthakaram	anarthakarau	anarthakarān
Instrumental	anarthakareṇa	anarthakarābhyām	anarthakaraiḥ anarthakarebhiḥ
Dative	anarthakarāya	anarthakarābhyām	anarthakarebhyaḥ
Ablative	anarthakarāt	anarthakarābhyām	anarthakarebhyaḥ
Genitive	anarthakarasya	anarthakarayoḥ	anarthakarāṇām
Locative	anarthakare	anarthakarayoḥ	anarthakareṣu

Compound anarthakara -

Adverb -anarthakaram -anarthakarāt