minatory       
adjective  formal uk/ˈmɪn.ə.tər.i/ us/ˈmɪn.ə.tɔːr.i/
 威吓的;威吓性的
expressing a warning or a threat
  This minatory approach hasn't scared children off hard drugs. 这种威胁性的方法并没有把孩子们吓得远离毒品。 
 - More examples
 - The rumours of plots had been rumbling for months, but there was no sign of an attack, other than a couple of minatory articles in left-wing magazines.
 - The minatory prophecies which announce calamities may or may not be fulfilled.
 - She noticed the neglected timber of the house, the weedy gravel and the minatory notices which guarded the bounds.