κατασκάπτειν
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
Greek > English (Woodhouse Verbs Reversed)
(see also κατασκάπτω): batter down, lay in ruins, level to the ground
Lexicon Thucydideum
subruere, demoliri, to overthrow, demolish, 4.109.1, 5.63.2, 6.7.2, 8.92.10.