Declension table of ?upanāyaka

Masculine	Singular	Dual	Plural
Nominative	upanāyakaḥ	upanāyakau	upanāyakāḥ
Vocative	upanāyaka	upanāyakau	upanāyakāḥ
Accusative	upanāyakam	upanāyakau	upanāyakān
Instrumental	upanāyakena	upanāyakābhyām	upanāyakaiḥ upanāyakebhiḥ
Dative	upanāyakāya	upanāyakābhyām	upanāyakebhyaḥ
Ablative	upanāyakāt	upanāyakābhyām	upanāyakebhyaḥ
Genitive	upanāyakasya	upanāyakayoḥ	upanāyakānām
Locative	upanāyake	upanāyakayoḥ	upanāyakeṣu

Compound upanāyaka -

Adverb -upanāyakam -upanāyakāt