ἀμφίταπις
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)
-ιδος, ἡ, = ἀμφιτάπης, Ael. Dion. Fr. 304, Lycon ap. DL. 5.72.
Russian (Dvoretsky)
ἀμφίτᾰπις: ιδος ἡ ковер или покрывало с двухсторонним ворсом Diog. L.