Declension table of upāyana

Neuter	Singular	Dual	Plural
Nominative	upāyanam	upāyane	upāyanāni
Vocative	upāyana	upāyane	upāyanāni
Accusative	upāyanam	upāyane	upāyanāni
Instrumental	upāyanena	upāyanābhyām	upāyanaiḥ
Dative	upāyanāya	upāyanābhyām	upāyanebhyaḥ
Ablative	upāyanāt	upāyanābhyām	upāyanebhyaḥ
Genitive	upāyanasya	upāyanayoḥ	upāyanānām
Locative	upāyane	upāyanayoḥ	upāyaneṣu

Compound upāyana -

Adverb -upāyanam -upāyanāt