Declension table of rahasya

Masculine	Singular	Dual	Plural
Nominative	rahasyaḥ	rahasyau	rahasyāḥ
Vocative	rahasya	rahasyau	rahasyāḥ
Accusative	rahasyam	rahasyau	rahasyān
Instrumental	rahasyena	rahasyābhyām	rahasyaiḥ rahasyebhiḥ
Dative	rahasyāya	rahasyābhyām	rahasyebhyaḥ
Ablative	rahasyāt	rahasyābhyām	rahasyebhyaḥ
Genitive	rahasyasya	rahasyayoḥ	rahasyānām
Locative	rahasye	rahasyayoḥ	rahasyeṣu

Compound rahasya -

Adverb -rahasyam -rahasyāt