adjective
- causing vexation; troublesome; annoying: a vexatious situation.
- Law. (of legal actions) instituted without sufficient grounds and serving only to cause annoyance to the defendant.
- disorderly; confused; troubled.
adjective
- vexing or tending to vex
- vexed
- law (of a legal action or proceeding) instituted without sufficient grounds, esp so as to cause annoyance or embarrassment to the defendantvexatious litigation
1530s; see vexation + -ous. Related: Vexatiously; vexatiousness.