καταφθάνω
From LSJ
ὃν οὐ τύπτει λόγος οὐδὲ ῥάβδος → if words don't get through, neither a beating will | if the carrot doesn't work, the stick will not work either | whom words do not strike, neither does the rod
English (LSJ)
[φθᾰ],
A fall upon unawares, ἐπί τινα LXX Jd.20.42. II c. inf., κ. τεκεῖν bring forth a child first, BGU665 ii 14 (i A.D.): also c. acc., pay in advance, κατέφθακα ἀρτάβας ιβ POxy.1482.10 (ii A.D.).
Greek (Liddell-Scott)
καταφθάνω: ἐπιπίπτω ἀπροσδοκήτως, ἐπί τινα Ἑβδ. (Ἰουδ. Κ', 32) · τινὰ Μαλαλ.