Webster's Revised Unabridged Dictionary · 1913

Vex

Vex (veks) , transitive verb

[French vexer, Latin vexare, vexatum, to vex, originally, to shake, toss, in carrying, v. intens. from vehere, vectum, to carry. See Vehicle.]

1.
To toss back and forth; to agitate; to disquiet.
White curl the waves, and the vexed ocean roars. — Pope
2.
To make angry or annoyed by little provocations; to irritate; to plague; to torment; to harass; to afflict; to trouble; to tease.
I will not vex your souls. — Shakespeare
Ten thousand torments vex my heart. — Prior
3.
To twist; to weave. [Rare]
Some English wool, vexed in a Belgian loom. — Dryden

Vex , intransitive verb

To be irritated; to fret. [Rare] — Chapman