Pestilent

//ˈpɛstələnt// adj, slang

Definitions

Adjective
  1. 1
    Highly injurious or destructive to life: deadly.
  2. 2
    Annoying. informal
  3. 3
    Harmful to morals or public order. archaic
Adjective
  1. 1
    likely to spread and cause an epidemic disease wordnet
  2. 2
    exceedingly harmful wordnet

Etymology

Middle English, from Latin pestilens, from Latin pestis.

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