golpe.

Inherited from Old Spanish colpe, from Late Latin colpus (attested in Salic Law and the Reichenau Glosses), syncopation of *colŭpus, alteration of Latin colaphus, from Ancient Greek κόλαφος (kólaphos). Cognate with English coup. Doublet of colpo. While some linguists suggest it may possibly be a Gallicism in Hispano-Romance due to its unusual phonetic evolution (e.g. lack of diphtongization of the 'o', final '-e', etc.), upon closer inspection, this is probably not the case. The fact that the Latin word was originally a loanword from Greek, subject to certain sound shifts affecting the short vowels in open syllables, likely had an impact on its development in Romance. As for the final '-e' instead of an '-o' in an expected *golpo, it may be because the Spanish word was actually a derivative of the Old Spanish verb golpar (“to wound, hurt”), colpar, from a related Vulgar Latin verb *colaphāre (a Late or Vulgar Latin derivation culpatores, referring to a type of gladiator, was attested in a gloss, for *colaphatores, following syncopation); compare French couper and Old Galician-Portuguese golpar, golbar.