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vex

2 ENTRIES FOUND:
vex /ˈvɛks/ verb
vexes; vexed; vexing
vex
/ˈvɛks/
verb
vexes; vexed; vexing
Britannica Dictionary definition of VEX
[+ object] old-fashioned
: to annoy or worry (someone)

— vexing

adjective [more vexing; most vexing]