O.E.
wyrgan "to strangle," from W.Gmc.
*wurgijanan (cf. M.Du.
worghen, Du.
worgen, O.H.G.
wurgen, Ger.
würgen "to strangle," O.N.
virgill "rope"), from PIE
*wergh- "to turn" (see
wring). The oldest sense was obs. in Eng. after c.1600; meaning "annoy, bother, vex," first recorded 1671, developed from that of "harass by rough or severe treatment" (1553), as of dogs or wolves attacking sheep. Meaning "to cause mental distress or trouble" is attested from 1822; intrans. sense of "to feel anxiety or mental trouble" is first recorded 1860.