Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of insidious is as below...

Insidious :: Insidious (a.) Lying in wait; watching an opportunity to insnare or entrap; deceitful; sly; treacherous; -- said of persons; as, the insidious foe..

Dog :: Dog (v. t.) To hunt or track like a hound; to follow insidiously or indefatigably; to chase with a dog or dogs; to worry, as if by dogs; to hound with importunity..

Snary :: Snary (a.) Resembling, or consisting of, snares; entangling; insidious..

Captious :: Captious (a.) Fitted to harass, perplex, or insnare; insidious; troublesome..

Wile :: Wile (n.) A trick or stratagem practiced for insnaring or deception; a sly, insidious; artifice; a beguilement; an allurement..

Cobweb :: Cobweb (n.) A snare of insidious meshes designed to catch the ignorant and unwary.

Siren :: Siren (n.) Something which is insidious or deceptive.

Creepingly :: Creepingly (adv.) by creeping slowly; in the manner of a reptile; insidiously; cunningly.

Deepness :: Deepness (n.) Craft; insidiousness.

Covertly :: Covertly (adv.) Secretly; in private; insidiously.

Insidious :: Insidious (a.) Intended to entrap; characterized by treachery and deceit; as, insidious arts..

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