insidious

in·sid·i·ous  (n-sd-s)

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.

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[From Latin nsidisus, from nsidiae, ambush, from nsidre, to sit upon, lie in wait for : in-, in, on; see in-² + sedre, to sit; see sed- in Indo-European roots.]

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in·sidi·ous·ly adv.

in·sidi·ous·ness n.

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insidious [ɪnˈsɪdɪəs]

adj

1. stealthy, subtle, cunning, or treacherous

2. working in a subtle or apparently innocuous way, but nevertheless deadly an insidious illness

[from Latin insidiōsus cunning, from insidiae an ambush, from insidēre to sit in; see insessorial]

insidiously  adv

insidiousness  n

Thesaurus

Adj.	1.	insidious - beguiling but harmful; "insidious pleasures" seductive - tending to entice into a desired action or state
	2.	insidious - intended to entrap dangerous, unsafe - involving or causing danger or risk; liable to hurt or harm; "a dangerous criminal"; "a dangerous bridge"; "unemployment reached dangerous proportions"
	3.	insidious - working or spreading in a hidden and usually injurious way; "glaucoma is an insidious disease"; "a subtle poison" pernicious, subtle harmful - causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking"

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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

Translations

insidious [ɪnˈsɪdɪəs] ADJ → insidioso

insidious [ɪnˈsɪdiəs] adj → insidieux/euse

insidious

adj, insidiously

adv → heimtückisch

insidious [ɪnˈsɪdɪəs] adj → insidioso/a

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insidious [ɪnˈsɪdɪəs] adj → insidioso/a