Compunction /(?)/

Com·punc·tion

Compunction

n.
  1. A pricking; stimulation. [Obs.]
    That acid and piercing spirit which, with such activity and compunction, invadeth the brains and nostrils.
  2. A picking of heart; poignant grief proceeding from a sense of guilt or consciousness of causing pain; the sting of conscience.
    He acknowledged his disloyalty to the king, with expressions of great compunction.