Treacherous \Treacher*ous\, a. [See Treacher.] Like a traitor; involving treachery; violating allegiance or faith pledged; traitorous to the state or sovereign; perfidious in private life; betraying a trust; faithless. [1913 Webster] Loyal father of a treacherous son.
Fuel Safety Tips. 1  If you need to transport fuels such as propane, gasoline or oil, it should only be carried in approved containers certified by agencies such as the Canadian Standards Association or Underwritersâ Laboratories of Canada. 2  Containers should never be filled right to the top.
DOT-approved containers are used more often by the general public. DOT-approved gas cans, or âjerry cans,â have a screw-on cap instead of a spring-closing lid, spout cover or flash-arresting screen. They do not meet the safety can definition, but OSHA has decided that they pose very little hazard and meet the basic intent of the standard.