With dative. [He/she/it] is antagonised, is enraged.[1]
"More of the Romans fell, and Trajan was vexed at what had happened".[2]
And elswhere: "because of often having seen him before, he recognised the man without difficulty."[3] Meaning easily.
And elsewhere: "with him having been vexed at the guards to such an extent as to cut off their heads."[4]
And elsewhere: "when the sight of the dream visited them all, the people are vexed."[5] [i.e.] the Tyrians.