insidious

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(in-sid-i-ous) 4 syllables

Definition

adjective. something that is harmful but not obvious.

Example Sentence

They hatched an insidious plot.

More Example Sentences

He had insidious thoughts about his rival.

Synonyms

sneaky; treacherous; deceitful

Antonyms

honest; straightforward; clear

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insidious
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Rhymes

  • hideous

  • fastidious
  • insidious
  • invidious