σχερός
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)
ὁ, found only in dat., ἐν σχερῷ
A in a line, one after another, uninterruptedly, successively, Pi.N.1.69, 11.39, I.6(5).22: written ἐνσχερώ in A.R.1.912; cf. ἐπισχερώ, ἰσχερώ (perh. for Cypr. ἰν σχερῷ). II σχερός· ἀκτή, αἰγιαλός, Hsch., cf. Theognost.Can.12: also σχερόν, = κῦμα ἑτοῖμον, Amerias ap.Hsch.