26 Mar 06:06 PM

  • Portuguese (Portugal)
Question about English (US)

I saw an article in the The New York Times and I noticed this small text.
“When a candidate says ‘Ne-VAH-duh,’ it sets people’s teeth on edge because it’s reasonable to expect you to know something about your audience,” Dr. Green said." - The New York Times

Could you tell me what does "it sets people’s teeth on edge" mean? I can translate that expression to my language but it doesn't makes sense and that's why I'm asking.Thank you very much!

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  • English (US)
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