τύπτωtýptōStrong's G5180

to "thump", i.e. cudgel or pummel (properly, with a stick or bastinado), but in any case by repeated blows; thus differing from G3817 and G3960, which denote a (usually single) blow with the hand or any instrument, or G4141 with the fist (or a hammer), or G4474 with the palm; as well as from G5177, an accidental collision); by implication, to punish; figuratively, to offend (the conscience)

Derivation: a primary verb (in a strengthened form)