Synonyms for Frightening

Synonyms starting with letter U

• unnerving

  terrifying
• upsetting

  terrifying
• unsettling
• unearthly
• unholy
• unnatural
• uncanny
• 

  ugly
• unspeakable
• unfriendly
• unpleasant
• ungodly
• uncertain
• unnerve
• unman
• uncontrollable
• untamed
• unreasonable
• unapproachable
• uninviting
• unbelievable
• undescribable
• unimaginable
• unutterable
• unhospitable
• unexpected
• unforeseen
• unwelcoming
• unreal
• uneasy
• unattractive
• unhappy
• uninteresting
• unlikeable
• unsophisticated
• unlucky
• unpropitious
• unsafe
• upcoming