Declension table of ?anarthakara

Neuter	Singular	Dual	Plural
Nominative	anarthakaram	anarthakare	anarthakarāṇi
Vocative	anarthakara	anarthakare	anarthakarāṇi
Accusative	anarthakaram	anarthakare	anarthakarāṇi
Instrumental	anarthakareṇa	anarthakarābhyām	anarthakaraiḥ
Dative	anarthakarāya	anarthakarābhyām	anarthakarebhyaḥ
Ablative	anarthakarāt	anarthakarābhyām	anarthakarebhyaḥ
Genitive	anarthakarasya	anarthakarayoḥ	anarthakarāṇām
Locative	anarthakare	anarthakarayoḥ	anarthakareṣu

Compound anarthakara -

Adverb -anarthakaram -anarthakarāt