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Showing words for INSIDIOUS using the English dictionary
9 Letter Words for Insidious
8 Letter Words for Insidious
6 Letter Words for Insidious
5 Letter Words for Insidious
4 Letter Words for Insidious
3 Letter Words for Insidious
Definitions for Insidious
[1] intended to entrap or beguile: an insidious plan.
[2] stealthily treacherous or deceitful: an insidious enemy.
[3] operating or proceeding in an inconspicuous or seemingly harmless way but actually with grave effect: an insidious disease.
[4] stealthy, subtle, cunning, or treacherous
[5] working in a subtle or apparently innocuous way, but nevertheless deadly an insidious illness
Words related to Insidious
subtle, dangerous, Machiavellian, artful, astute, corrupt, crafty, crooked, cunning, deceitful, deceptive, deep, designing, dishonest, disingenuous, duplicitous, foxy, intriguing, perfidious, perilous
Words nearby Insidious
inside track, inside track, the, insider, insider dealing, insider trading, insidious, insight, insightful, insigne, insignia, insignificance
Origin of Insidious
1535–45; < Latin insidiōsus deceitful, equivalent to insidi(ae ) (plural) an ambush (derivative of insidēre to sit in or on) + -ōsus -ous; see sit1
Words that may be confused with Insidious
Other words from Insidious
in·sid·i·ous·ly , adverb
in·sid·i·ous·ness , noun
un·in·sid·i·ous , adjective
un·in·sid·i·ous·ly , adverb
un·in·sid·i·ous·ness , noun
in•sid′ i•ous•ly adv.
Word origin for Insidious
C16: from Latin insidiōsus cunning, from insidiae an ambush, from insidēre to sit in; see insessorial
Synonyms for Insidious
dangerous, subtle, Machiavellian, artful, astute, corrupt, crafty, crooked, cunning, deceitful, deceptive, deep, designing, dishonest, disingenuous, duplicitous, ensnaring, false, foxy, guileful, intriguing, like a snake in the grass, perfidious, perilous, secret, slick, sly, smooth, snaky, sneaking, stealthy, surreptitious, treacherous, wily, wormlike