Declension table of pratyavāya

Masculine	Singular	Dual	Plural
Nominative	pratyavāyaḥ	pratyavāyau	pratyavāyāḥ
Vocative	pratyavāya	pratyavāyau	pratyavāyāḥ
Accusative	pratyavāyam	pratyavāyau	pratyavāyān
Instrumental	pratyavāyena	pratyavāyābhyām	pratyavāyaiḥ pratyavāyebhiḥ
Dative	pratyavāyāya	pratyavāyābhyām	pratyavāyebhyaḥ
Ablative	pratyavāyāt	pratyavāyābhyām	pratyavāyebhyaḥ
Genitive	pratyavāyasya	pratyavāyayoḥ	pratyavāyānām
Locative	pratyavāye	pratyavāyayoḥ	pratyavāyeṣu

Compound pratyavāya -

Adverb -pratyavāyam -pratyavāyāt