fer malbé

Catalan

fer malbé (first-person singular present faig malbé, first-person singular preterite fiu malbé, past participle fet malbé)

to spoil, to damage
- 1927, Emerencià Roig i Raventós, La pesca a Catalunya:
  La fitora té l'inconvenient que fa malbé el peix, omplint-lo de forats i descarnant-lo, la qual cosa li dóna un aspecte desagradable i fa que hagi d'ésser venut a baix preu.
  The fish spear has the disadvantage that it damages the fish, filling it with holes and stripping flesh from it, which gives it a disagreeable appearance and forces it to be sold cheaply.