Declension table of ?nirapāya

Masculine	Singular	Dual	Plural
Nominative	nirapāyaḥ	nirapāyau	nirapāyāḥ
Vocative	nirapāya	nirapāyau	nirapāyāḥ
Accusative	nirapāyam	nirapāyau	nirapāyān
Instrumental	nirapāyeṇa	nirapāyābhyām	nirapāyaiḥ nirapāyebhiḥ
Dative	nirapāyāya	nirapāyābhyām	nirapāyebhyaḥ
Ablative	nirapāyāt	nirapāyābhyām	nirapāyebhyaḥ
Genitive	nirapāyasya	nirapāyayoḥ	nirapāyāṇām
Locative	nirapāye	nirapāyayoḥ	nirapāyeṣu

Compound nirapāya -

Adverb -nirapāyam -nirapāyāt