insidious
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insidious
progressing inconspicuously but harmfully: an insidious disease; treacherous; crafty; stealthily deceitful: an insidious agreement; corrupting; cunning, wily
Not to be confused with:
invidious – unfairly discriminating; injurious; hateful; calculated to give offense; causing animosity or resentment: an invidious comment
Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree
in·sid·i·ous
(ĭn-sĭd′ē-əs)adj.
1. Working or spreading harmfully in a subtle or stealthy manner: insidious rumors; an insidious disease.
2. Intended to entrap; treacherous: insidious misinformation.
3. Beguiling but harmful; alluring: insidious pleasures.
[From Latin īnsidiōsus, from īnsidiae, ambush, from īnsidēre, to sit upon, lie in wait for : in-, in, on; see in-2 + sedēre, to sit; see sed- in Indo-European roots.]
in·sid′i·ous·ly adv.
in·sid′i·ous·ness n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
insidious
(ɪnˈsɪdɪəs)adj
1. stealthy, subtle, cunning, or treacherous
2. working in a subtle or apparently innocuous way, but nevertheless deadly: an insidious illness.
[C16: from Latin insidiōsus cunning, from insidiae an ambush, from insidēre to sit in; see insessorial]
inˈsidiously adv
inˈsidiousness n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
in•sid•i•ous
(ɪnˈsɪd i əs)adj.
1. intended to entrap or beguile: an insidious plan.
2. stealthily treacherous or deceitful: an insidious enemy.
3. operating or proceeding inconspicuously but with grave effect: an insidious disease.
[1535–45; < Latin insidiōsus deceitful, derivative of insidi(ae) (pl.) an ambush, derivative of insidēre to sit in or on]
in•sid′i•ous•ly, adv.
in•sid′i•ous•ness, n.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
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Adj. | 1. | insidious - beguiling but harmful; "insidious pleasures" seductive - tending to entice into a desired action or state |
2. | insidious - intended to entrap | |
3. | insidious - working or spreading in a hidden and usually injurious way; "glaucoma is an insidious disease"; "a subtle poison" harmful - causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking" |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
insidious
adjective stealthy, subtle, cunning, designing, smooth, tricky, crooked, sneaking, slick, sly, treacherous, deceptive, wily, crafty, artful, disingenuous, Machiavellian, deceitful, surreptitious, duplicitous, guileful They focus on overt racism rather than insidious aspects of racism.
open, obvious, straightforward, upright, sincere, harmless, honest, conspicuous, forthright, artless, ingenuous
open, obvious, straightforward, upright, sincere, harmless, honest, conspicuous, forthright, artless, ingenuous
Collins Thesaurus of the English Language – Complete and Unabridged 2nd Edition. 2002 © HarperCollins Publishers 1995, 2002
Translations
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
insidious
[ɪnˈsɪdiəs] adj → insidieux/euseCollins English/French Electronic Resource. © HarperCollins Publishers 2005
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
insidious
[ɪnˈsɪdɪəs] adj → insidioso/aCollins Italian Dictionary 1st Edition © HarperCollins Publishers 1995
in·sid·i·ous
a. insidioso-a, rel. a una enfermedad que se desarrolla gradualmente sin producir síntomas obvios.
English-Spanish Medical Dictionary © Farlex 2012