vexed
v. C1 Advanced US //ˈvɛkst// UK //vˈɛkst// vexed
v. feeling annoyed or worried about something that is difficult to solve. You use this when a problem is frustrating you because it is not easy to fix.
v. feeling annoyed, worried, or perplexed by a difficult or frustrating situation. Often used to describe a state of being troubled by a persistent problem.
I am vexed by this difficult math problem.
The manager was vexed by the constant technical errors that kept the website from loading properly for customers.
The diplomat was deeply vexed by the lack of progress in the negotiations, as both sides remained unwilling to compromise on the most contentious points of the treaty.
From Middle English vexed, vexede, vexit, vixid, equivalent to vex + -ed.