🇬🇧 en fr 🇫🇷

insidious adjective

  /ɪnˈsɪdi.əs/
  • Causing harm in a stealthy, often gradual, manner.
 insidieux

insidiously adverb

  /ɪnˈsɪdi.əsli/
  • in an insidious manner
 insidieusement

insidiousness

insidiosité
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