Answer: vexatious

AnswerCrossword Clue
VEXATIOUSIrksome
VEXATIOUSTroubling
VEXATIOUSTrying
vexatiousinstituted without sufficient grounds and serving only to cause annoyance to the defendant.
vexatiouscausing vexation
vexatioustended to harass a vexatious lawsuit
vexatiouscausing vexation distressing vexatious delays