Declension table of ?apūrvya

Masculine	Singular	Dual	Plural
Nominative	apūrvyaḥ	apūrvyau	apūrvyāḥ
Vocative	apūrvya	apūrvyau	apūrvyāḥ
Accusative	apūrvyam	apūrvyau	apūrvyān
Instrumental	apūrvyeṇa	apūrvyābhyām	apūrvyaiḥ apūrvyebhiḥ
Dative	apūrvyāya	apūrvyābhyām	apūrvyebhyaḥ
Ablative	apūrvyāt	apūrvyābhyām	apūrvyebhyaḥ
Genitive	apūrvyasya	apūrvyayoḥ	apūrvyāṇām
Locative	apūrvye	apūrvyayoḥ	apūrvyeṣu

Compound apūrvya -

Adverb -apūrvyam -apūrvyāt