Declension table of ?nirapāya

Neuter	Singular	Dual	Plural
Nominative	nirapāyam	nirapāye	nirapāyāṇi
Vocative	nirapāya	nirapāye	nirapāyāṇi
Accusative	nirapāyam	nirapāye	nirapāyāṇi
Instrumental	nirapāyeṇa	nirapāyābhyām	nirapāyaiḥ
Dative	nirapāyāya	nirapāyābhyām	nirapāyebhyaḥ
Ablative	nirapāyāt	nirapāyābhyām	nirapāyebhyaḥ
Genitive	nirapāyasya	nirapāyayoḥ	nirapāyāṇām
Locative	nirapāye	nirapāyayoḥ	nirapāyeṣu

Compound nirapāya -

Adverb -nirapāyam -nirapāyāt