Declension table of ?rahasyu

Masculine	Singular	Dual	Plural
Nominative	rahasyuḥ	rahasyū	rahasyavaḥ
Vocative	rahasyo	rahasyū	rahasyavaḥ
Accusative	rahasyum	rahasyū	rahasyūn
Instrumental	rahasyunā	rahasyubhyām	rahasyubhiḥ
Dative	rahasyave	rahasyubhyām	rahasyubhyaḥ
Ablative	rahasyoḥ	rahasyubhyām	rahasyubhyaḥ
Genitive	rahasyoḥ	rahasyvoḥ	rahasyūnām
Locative	rahasyau	rahasyvoḥ	rahasyuṣu

Compound rahasyu -

Adverb -rahasyu