What emotion does the term 'rancorous' convey?

The term 'rancorous' conveys a sense of deep-seated resentment, which emerges from prolonged hostility or bitterness towards someone or something. This word encapsulates a strong, enduring feeling of animosity that may arise from past grievances, making it far removed from positive emotions such as happiness, affection, or indifference. The definition of 'rancorous' is often associated with animosity that festers over time, suggesting a level of intensity that is not present in other options. Emotions associated with 'rancorous' can lead to a toxic atmosphere in interpersonal relationships, making it a term rich in conflict and unresolved tension.