🇪🇸Spanish Source WordCode: ES

insidioso

Pronunciation / Transliteration: insidioso

🇬🇧 Direct English Meaning:
Insidious/ɪnˈsɪd.i.əs/
adjectiveCEFR C2 (Proficient)Top #8500 frequency
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🇪🇸 Example Sentence in Spanish:

"El cáncer puede ser una enfermedad insidiosa."

Comprehensive Definitions & Senses

1 sense
As adjective
  1. 1

    Proceeding in a gradual, subtle way, but with harmful effects.

    "High blood pressure is an insidious condition that often has no symptoms."

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Linguistic Origin & Historical Etymology

Derived from the Latin 'insidiosus', meaning 'cunning' or 'treacherous', stemming from 'insidiae' (ambush), which itself comes from 'insidere' (to sit upon or lie in wait for). Entering English in the mid-16th century, the word initially retained its literal sense of lying in wait, but gradually evolved to describe processes or diseases that progress stealthily with harmful effects before becoming apparent.

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