Declension table of nirupāya

Masculine	Singular	Dual	Plural
Nominative	nirupāyaḥ	nirupāyau	nirupāyāḥ
Vocative	nirupāya	nirupāyau	nirupāyāḥ
Accusative	nirupāyam	nirupāyau	nirupāyān
Instrumental	nirupāyeṇa	nirupāyābhyām	nirupāyaiḥ nirupāyebhiḥ
Dative	nirupāyāya	nirupāyābhyām	nirupāyebhyaḥ
Ablative	nirupāyāt	nirupāyābhyām	nirupāyebhyaḥ
Genitive	nirupāyasya	nirupāyayoḥ	nirupāyāṇām
Locative	nirupāye	nirupāyayoḥ	nirupāyeṣu

Compound nirupāya -

Adverb -nirupāyam -nirupāyāt