λαμπρύνεσθαι
From LSJ
Greek > English (Woodhouse Verbs Reversed)
(see also λαμπρύνω): polish, be proud of, make a show, plume oneself on, pride oneself on, rub up
Lexicon Thucydideum
magnificentiam ostentare, to make a display of splendor, 6.16.3.