intimidating       
adjective uk/ɪnˈtɪm.ɪ.deɪ.tɪŋ/ us/ɪnˈtɪm.ə.deɪ.t̬ɪŋ/
 令人紧张的,吓人的
making you feel frightened or nervous
  an intimidating array of weapons 大量令人胆战心惊的武器 
 an intimidating manner 令人惧怕的态度 
 She can be very intimidating when she's angry. 她发怒的样子可能会很吓人。 
 Synonym: daunting