Declension table of ?apūrvya

Neuter	Singular	Dual	Plural
Nominative	apūrvyam	apūrvye	apūrvyāṇi
Vocative	apūrvya	apūrvye	apūrvyāṇi
Accusative	apūrvyam	apūrvye	apūrvyāṇi
Instrumental	apūrvyeṇa	apūrvyābhyām	apūrvyaiḥ
Dative	apūrvyāya	apūrvyābhyām	apūrvyebhyaḥ
Ablative	apūrvyāt	apūrvyābhyām	apūrvyebhyaḥ
Genitive	apūrvyasya	apūrvyayoḥ	apūrvyāṇām
Locative	apūrvye	apūrvyayoḥ	apūrvyeṣu

Compound apūrvya -

Adverb -apūrvyam -apūrvyāt