IPA: /ˈvɛksɪŋli/
KK: /ˈvɛksɪŋli/
In a way that causes annoyance or frustration.
She kept asking vexingly difficult questions during the meeting.
Vexingly → It is formed from "vexare" (meaning to trouble or annoy) and the suffix "-ingly" (indicating a manner of doing something). The word "vexingly" means in a manner that troubles or annoys.
Think of the word 'vex' which means to trouble or annoy, and remember that 'vexingly' describes doing something in a way that causes annoyance.