βελτιόω
From LSJ
English (LSJ)
A improue, Ph.1.202, al., Stud.Pal.1.7 ii 20 (v A. D.), etc.:—Pass., Ph.1.169, al., Plu.2.85c, SIG888.5 (Thrace, iii A. D.), Antyll. ap. Orib.10.23.18, etc.; οὔτε βελτιοῦσι τὴν αἰτίαν τῶν παθῶν give no better reason for, Posidon. ap. Gal.5.469.
German (Pape)
[Seite 442] verbessern, Arist. plant. u. Sp.