How to pronounce insidious
American English pronunciation
in-SID-ee-us
- IPA
- /ɪnˈsɪdi.əs/
- Syllables
- in · SID · ee · us (4 syllables, stress on the 2nd)
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What insidious means
Spreading harm quietly before you notice
In a sentence: The insidious leak spread through the ceiling before anyone noticed.
Where it comes from: It came through French from a Latin word meaning cunning, from a Latin word for an ambush, which comes from parts meaning to sit in.
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