Declension table of ?kaṣṭādhika

Masculine	Singular	Dual	Plural
Nominative	kaṣṭādhikaḥ	kaṣṭādhikau	kaṣṭādhikāḥ
Vocative	kaṣṭādhika	kaṣṭādhikau	kaṣṭādhikāḥ
Accusative	kaṣṭādhikam	kaṣṭādhikau	kaṣṭādhikān
Instrumental	kaṣṭādhikena	kaṣṭādhikābhyām	kaṣṭādhikaiḥ kaṣṭādhikebhiḥ
Dative	kaṣṭādhikāya	kaṣṭādhikābhyām	kaṣṭādhikebhyaḥ
Ablative	kaṣṭādhikāt	kaṣṭādhikābhyām	kaṣṭādhikebhyaḥ
Genitive	kaṣṭādhikasya	kaṣṭādhikayoḥ	kaṣṭādhikānām
Locative	kaṣṭādhike	kaṣṭādhikayoḥ	kaṣṭādhikeṣu

Compound kaṣṭādhika -

Adverb -kaṣṭādhikam -kaṣṭādhikāt