Declension table of ?sumnāyu

Masculine	Singular	Dual	Plural
Nominative	sumnāyuḥ	sumnāyū	sumnāyavaḥ
Vocative	sumnāyo	sumnāyū	sumnāyavaḥ
Accusative	sumnāyum	sumnāyū	sumnāyūn
Instrumental	sumnāyunā	sumnāyubhyām	sumnāyubhiḥ
Dative	sumnāyave	sumnāyubhyām	sumnāyubhyaḥ
Ablative	sumnāyoḥ	sumnāyubhyām	sumnāyubhyaḥ
Genitive	sumnāyoḥ	sumnāyvoḥ	sumnāyūnām
Locative	sumnāyau	sumnāyvoḥ	sumnāyuṣu

Compound sumnāyu -

Adverb -sumnāyu