Declension table of ?upasādhaka

Masculine	Singular	Dual	Plural
Nominative	upasādhakaḥ	upasādhakau	upasādhakāḥ
Vocative	upasādhaka	upasādhakau	upasādhakāḥ
Accusative	upasādhakam	upasādhakau	upasādhakān
Instrumental	upasādhakena	upasādhakābhyām	upasādhakaiḥ upasādhakebhiḥ
Dative	upasādhakāya	upasādhakābhyām	upasādhakebhyaḥ
Ablative	upasādhakāt	upasādhakābhyām	upasādhakebhyaḥ
Genitive	upasādhakasya	upasādhakayoḥ	upasādhakānām
Locative	upasādhake	upasādhakayoḥ	upasādhakeṣu

Compound upasādhaka -

Adverb -upasādhakam -upasādhakāt