Definition of insidiously

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  • insidiously is a valid Scrabble US word with a point value of 15
  • insidiously is a valid Scrabble UK word with a point value of 15
  • insidiously is a valid Words with friends word with a point value of 17

Definition of insidiously

  • in a harmfully insidious manner (adverb)

    Examples

    1. these drugs act insidiously

    Synonyms

    1. perniciously

See definition of insidiously in Merriam Webster