Declension table of ?upasādhaka

Neuter	Singular	Dual	Plural
Nominative	upasādhakam	upasādhake	upasādhakāni
Vocative	upasādhaka	upasādhake	upasādhakāni
Accusative	upasādhakam	upasādhake	upasādhakāni
Instrumental	upasādhakena	upasādhakābhyām	upasādhakaiḥ
Dative	upasādhakāya	upasādhakābhyām	upasādhakebhyaḥ
Ablative	upasādhakāt	upasādhakābhyām	upasādhakebhyaḥ
Genitive	upasādhakasya	upasādhakayoḥ	upasādhakānām
Locative	upasādhake	upasādhakayoḥ	upasādhakeṣu

Compound upasādhaka -

Adverb -upasādhakam -upasādhakāt