Definition Of pernicious

adjective

having a harmful effect, especially in a gradual or subtle way.

the pernicious influences of the mass media

Example Of pernicious

  • At its most extreme whole economies are destroyed by its pernicious influence.

  • At my lowest point I weighed six and a half stone, was perniciously anemic and got sent home from university.

  • At the same time, the pernicious influence of new urban cultural patterns could share some of the blame for rural degeneration.

  • Equally problematic is the pernicious effect of bad design on the environment.

  • For the public service, the affair demonstrates its fragility in the face of both ministers and, more perniciously , ministerial staffers.


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