Definitions

1. adjective

causing or tending to cause annoyance, frustration, or anger; giving rise to complaint or litigation.

“The vexatious delays in the project have cost us millions in lost revenue.”

2. noun

a vexatious person or thing.

“The company’s lawyers were accused of being vexatious in their defense.”

3. adverb

in a vexatious manner; with vexation.

“She was acting vexatiously towards her colleagues, causing a lot of tension in the office.”