as tough as nails

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Senior Member
Chinese,Cantonese,Sichuan dialect

I wonder if I can describe a woman who's physically strong. I saw her muscles in a gym the other day. I said to him "You're as tough as nails". I said to my friends "She's as tough as nails".

Is it natural to use the bold?
  • Keith Bradford

    Senior Member
    English (Midlands UK)
    As tough (or as hard) as nails usually refers to emotional and physical endurance, not just muscular strength.

    E.g: "My wife grew primroses which, though looking delicate, were as hard as nails to endure Himalayan winters."
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