pestilential

/ˌpɛstəˈlɛnʃəl/
adjective
  1. Relating to or causing a deadly infectious disease; plague-like.
    • Ancient sailors feared pestilential fevers that could wipe out an entire crew.
    • The pestilential outbreak forced the town into quarantine.
    • The pestilential conditions in the overcrowded prison led to many deaths.
  2. Extremely annoying, harmful, or destructive.
    • His pestilential habit of interrupting everyone drove his coworkers crazy.
    • The pestilential weeds took over the entire garden in just a few weeks.
    • The pestilential heat of the desert made the hike unbearable.
Antonyms
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