amargura

noun
  1. A feeling of deep sadness or resentment, often accompanied by a sense of injustice or disappointment. noun
    She felt a deep amargura after being passed over for the promotion she deserved.
    His amargura was evident in the way he spoke about his past experiences.
  2. A state of bitterness or sourness, often used metaphorically to describe a person's demeanor or outlook on life. noun
    The amargura in his voice was unmistakable when he talked about his failed marriage.
    Living in constant amargura can affect one's mental and physical health.