worrisome

from WordNet (r) 3.0 (2006)

worrisome
    adj 1: not reassuring; tending to cause anxiety [syn:
           {unreassuring}, {worrisome}] [ant: {reassuring}]
    2: causing distress or worry or anxiety; "distressing (or
       disturbing) news"; "lived in heroic if something distressful
       isolation"; "a disturbing amount of crime"; "a revelation
       that was most perturbing"; "a new and troubling thought"; "in
       a particularly worrisome predicament"; "a worrying
       situation"; "a worrying time" [syn: {distressing},
       {distressful}, {disturbing}, {perturbing}, {troubling},
       {worrisome}, {worrying}]

from The Collaborative International Dictionary of English v.0.48

Worrisome \Wor"ri*some\, a.
   Inclined to worry or fret; also, causing worry or annoyance.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

37 Moby Thesaurus words for "worrisome":
      aggravating, annoying, bothering, bothersome, chafing, disquieting,
      distressful, distressing, disturbing, exasperating, fretting,
      galling, harassing, importunate, importune, irking, irksome,
      irritating, pesky, pestering, pestiferous, pestilent, pestilential,
      plaguesome, plaguey, plaguing, provoking, teasing, tiresome,
      tormenting, troublesome, troubling, upsetting, vexatious, vexing,
      wearisome, worrying