προσκαταπυκνόω
From LSJ
Περὶ τῶν Ἱπποκράτους καὶ Πλάτωνος δογμάτων → On the Doctrines of Hippocrates and Plato
English (LSJ)
A make still closer, τὴν εὔνοιαν Plu.2.491a.
German (Pape)
[Seite 768] noch dazu verdichten, fester machen, τὴν εὔνοιαν, Plut. de trat. am. 20.