vexatious
vex-a-tious
adjective
Causing annoyance, frustration, or distress, often deliberately or persistently.
"His vexatious complaints wasted everyone's time."
Thesaurus
Synonyms: annoying, plaguey, teasing, galling, pestering, vexing, pestiferous, bothersome, pesky, disagreeable, irritating, nettlesome