frightening Synonyms

awful horrendous dread direful dire horrific terrorization dreadful fearsome fearful terrible dreaded sinister startling terrifying threatening shocking scary minacious minatory ominous petrifying railroading redoubtable scaring scare trepid unhospitable upsetting war of nerves blood-curdling spooky nerve-wracking nerve-racking macabre terrorisation nightmarish hair-raising bloodcurdling appallingly swatting arm-twisting unnerving worrying worrisome shuddery menacing forbidding feared eerie