Declension table of ?avadhika

Neuter	Singular	Dual	Plural
Nominative	avadhikam	avadhike	avadhikāni
Vocative	avadhika	avadhike	avadhikāni
Accusative	avadhikam	avadhike	avadhikāni
Instrumental	avadhikena	avadhikābhyām	avadhikaiḥ
Dative	avadhikāya	avadhikābhyām	avadhikebhyaḥ
Ablative	avadhikāt	avadhikābhyām	avadhikebhyaḥ
Genitive	avadhikasya	avadhikayoḥ	avadhikānām
Locative	avadhike	avadhikayoḥ	avadhikeṣu

Compound avadhika -

Adverb -avadhikam -avadhikāt