General Synonyms:
* Annoyance
* Irritability
* Frustration
* Discontent
* Displeasure
* Irritation
* Harassment
* Aggravation
* Distress
* Trouble
* Concern
More Specific Synonyms:
* Anger: If the vexation is strong and emotional.
* Disappointment: If the vexation is caused by something not meeting expectations.
* Grief: If the vexation is caused by sadness or loss.
* Embarrassment: If the vexation is caused by something shameful or humiliating.
* Confusion: If the vexation is caused by a lack of understanding.
* Indignation: If the vexation is caused by something unfair or unjust.
The best synonym for "vexation" depends on the specific context and the type of emotion you want to convey.