descuido
1 (distracción)
en un descuido le robaron el bolso her bag was stolen when she wasn't looking o in a moment of inattention; al menor descuido te puedes salir de la carretera if your attention wanders o if you get distracted, even for a moment, the car can go off the road; la colisión ocurrió por un descuido del maquinista the crash was caused by a careless mistake on the part of the driver; se me olvidó invitarla por descuido I carelessly forgot to invite her; dejó caer el pañuelo como por descuido she dropped her handkerchief as if by accident