Declension table of ?rathayu

Neuter	Singular	Dual	Plural
Nominative	rathayu	rathayunī	rathayūni
Vocative	rathayu	rathayunī	rathayūni
Accusative	rathayu	rathayunī	rathayūni
Instrumental	rathayunā	rathayubhyām	rathayubhiḥ
Dative	rathayune	rathayubhyām	rathayubhyaḥ
Ablative	rathayunaḥ	rathayubhyām	rathayubhyaḥ
Genitive	rathayunaḥ	rathayunoḥ	rathayūnām
Locative	rathayuni	rathayunoḥ	rathayuṣu

Compound rathayu -

Adverb -rathayu