Declension table of ?jāhnavīya

Neuter	Singular	Dual	Plural
Nominative	jāhnavīyam	jāhnavīye	jāhnavīyāni
Vocative	jāhnavīya	jāhnavīye	jāhnavīyāni
Accusative	jāhnavīyam	jāhnavīye	jāhnavīyāni
Instrumental	jāhnavīyena	jāhnavīyābhyām	jāhnavīyaiḥ
Dative	jāhnavīyāya	jāhnavīyābhyām	jāhnavīyebhyaḥ
Ablative	jāhnavīyāt	jāhnavīyābhyām	jāhnavīyebhyaḥ
Genitive	jāhnavīyasya	jāhnavīyayoḥ	jāhnavīyānām
Locative	jāhnavīye	jāhnavīyayoḥ	jāhnavīyeṣu

Compound jāhnavīya -

Adverb -jāhnavīyam -jāhnavīyāt