ἑβδομάκις
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)
Adv.
A seven times, Call.Del.251.
Greek (Liddell-Scott)
ἑβδομάκις: ἐπίρρ. ἑπτάκις, Καλλ. εἰς Δῆλ. 251.