[verb] [T] [dated] - to cause difficulty to (someone), or to cause (someone) to feel angry, annoyed or upsetThis issue looks likely to continue to vex the government.I've been vexed by this problem for weeks.I was vexed by the things that people were always telling me that I must do.If they find out what I've done, they'll be extremely vexed (= angry or annoyed) with me.
VEX
Meaning of VEX in English
Cambridge English vocab. Кембриджский английский словарь. 2012