transitive verb. obsolete : to plot or scheme against : lie in wait for. intransitive verb. obsolete : to lie in ambush : plot, scheme.

What does it mean when a person is insidious?

Full Definition of insidious

1a : having a gradual and cumulative effect : subtle the insidious pressures of modern life. b of a disease : developing so gradually as to be well established before becoming apparent. 2a : awaiting a chance to entrap : treacherous. b : harmful but enticing : seductive insidious drugs.

What does insidious mean in this essay?

Meaning: proceeding in a gradual, subtle way, but with very harmful effects. Sentences: He experienced the insidious influence of the corporate culture.