The Collaborative International Dictionary of English v.0.48:

Plague \Plague\, v. t. [imp. & p. p. Plagued; p. pr. & vb. n.
   Plaguing.]
   1. To infest or afflict with disease, calamity, or natural
      evil of any kind.
      [1913 Webster]

            Thus were they plagued
            And worn with famine.                 --Milton.
      [1913 Webster]

   2. Fig.: To vex; to tease; to harass.
      [1913 Webster]

            She will plague the man that loves her most.
                                                  --Spenser.
      [1913 Webster]

   Syn: To vex; torment; distress; afflict; harass; annoy;
        tease; tantalize; trouble; molest; embarrass; perplex.
        [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

55 Moby Thesaurus words for "plagued":
   annoyed, anxious, badgered, baited, bedeviled, beset, bothered,
   bugged, bullyragged, chivied, deviled, distressed, dogged,
   embarrassed, fretted, grubby, harassed, harried, haunted, heckled,
   hectored, hounded, inconvenienced, infested, irked, lousy, mindful,
   nagged, needled, nipped at, obsessed, pedicular, pediculous,
   persecuted, perturbed, pestered, picked on, put to it, puzzled,
   ragged, rankled, ratty, ravaged, remembering, sore beset, teased,
   teeming, tormented, troubled, unable to forget, vexed, wormy,
   worried, worried sick, worried stiff