bitter sensation

The term 'sensación amarga' refers to a feeling or perception that is unpleasant or evokes a sense of bitterness. This sensation can be physical, such as a taste that is sharp or sour, or it can be emotional, representing feelings of disappointment, resentment, or unfulfilled expectations. In many contexts, it signifies a negative experience that leaves a lasting impact on an individual, influencing their mood or perspective.