Que hace daño poco a poco y sin que se note.
Harmful in a slow, hidden way.
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See how the word “insidioso” is used in sentences
La enfermedad tiene un inicio insidioso. — The disease has an insidious onset.
La humedad es insidiosa y te das cuenta demasiado tarde. — Damp is insidious, and you notice it too late.
La adulación puede ser una forma insidiosa de conseguir favores. — Flattery can be an insidious way to get favors.
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