vex
Cross references: 1. annoy vex \'veks\ vt or vexed also vext; also vex.ing [ME vexen, fr. MF vexer, fr. L vexare to agitate, trouble, ve]x 1a: to bring trouble, distress, or agitation to 1b: to bring physical distress to 1c: to irritate or annoy by petty provocations : HARASS 1d: PUZZLE, BAFFLE 2: to debate or discuss at length {a vexed question} 3: to shake or toss about