Meanings (ES + gloss)
insidioso
Causing harm in a stealthy, often gradual, manner.
At some point in time they may become the source of an insidious cancer.
Strong and vigorous man as he looks, Livingstone has been for years the victim of a secret and insidious disease.
insidioso
Intending to entrap; alluring but harmful.
Gashford slid his cold insidious palm into his master's grasp, and so, hand in hand, and followed still by Barnaby and by his mother too, they mingled with the concourse.
Hansel and Gretel were lured by the witch’s insidious gingerbread house.
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