Synonyms for Frightful

Synonyms starting with letter U

• 

  ugly
• unpleasant

  ghastly, dreadful, offensive
• unspeakable

  horrible, terrible
• unnerving

  alarming, terrible
• unholy
• unsightly
• unearthly

  eerie
• unattractive
• unappealing
• unlovely
• unprepossessing
• unbearable

  unpleasant
• upsetting
• unsettling
• ungodly
• unfortunate
• uncanny
• unnatural

  terrible
• unappetizing
• unacceptable
• unutterable
• unshapely
• unendurable
• unsatisfactory
• undesirable
• unseemly
• uninviting
• uncomely
• unbeautiful
• unkind
• unrelenting
• unyielding
• unalluring
• unusual
• unwelcome
• unhealthy
• unsound
• unwholesome
• unmerciful
• unrestrained