An aggrieved tone is a manner of speaking that usually communicates dissatisfaction, disappointment or annoyance. However, there are various synonyms that can also express the same emotion. For instance, the phrase "a bitter tone" is a common description when someone is deeply upset or resentful about something. Another synonym is "a disgruntled tone", which indicates discontent or irritation. Other options include "a vexed tone", which implies annoyance or frustration, or "a wounded tone" which suggests emotional hurt or betrayal. Each of these synonyms offers a slightly different shade of the same emotion, so choosing the appropriate word depends on the specific context.