Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* assentātōrĭē (ads-), adv. [assentor], in a flattering manner, fawningly: dubitare te, non adsentatorie (i. e. non tibi indulgens), sed fraterne veto, Cic. ad Q. Fr. 2, 15, 6, 3.